diff --git a/scripts/gen-s-parser.py b/scripts/gen-s-parser.py
index 80f6911b4bd..7c4fc6e561d 100755
--- a/scripts/gen-s-parser.py
+++ b/scripts/gen-s-parser.py
@@ -49,7 +49,7 @@
     ("f64.pop",        "makePop(Type::f64)"),
     ("v128.pop",       "makePop(Type::v128)"),
     ("funcref.pop",    "makePop(Type::funcref)"),
-    ("anyref.pop",     "makePop(Type::anyref)"),
+    ("externref.pop",  "makePop(Type::externref)"),
     ("nullref.pop",    "makePop(Type::nullref)"),
     ("exnref.pop",     "makePop(Type::exnref)"),
     ("i32.load",       "makeLoad(s, Type::i32, /*isAtomic=*/false)"),
diff --git a/scripts/test/shared.py b/scripts/test/shared.py
index 681694e49d9..62fc6af0b4e 100644
--- a/scripts/test/shared.py
+++ b/scripts/test/shared.py
@@ -229,7 +229,7 @@ def has_shell_timeout():
     '--wasm-staging',
     '--experimental-wasm-eh',
     '--experimental-wasm-simd',
-    '--experimental-wasm-anyref',
+    '--experimental-wasm-externref',
     '--experimental-wasm-compilation-hints',
     '--experimental-wasm-return-call'
 ]
diff --git a/scripts/wasm2js.js b/scripts/wasm2js.js
index 1d09c193ab0..bc9ac6cbdbe 100644
--- a/scripts/wasm2js.js
+++ b/scripts/wasm2js.js
@@ -130,8 +130,8 @@ var asmLibraryArg = {
     console.log('get_f64 ' + [loc, index, value]);
     return value;
   },
-  get_anyref: function(loc, index, value) {
-    console.log('get_anyref ' + [loc, index, value]);
+  get_externref: function(loc, index, value) {
+    console.log('get_externref ' + [loc, index, value]);
     return value;
   },
   get_exnref: function(loc, index, value) {
@@ -155,8 +155,8 @@ var asmLibraryArg = {
     console.log('set_f64 ' + [loc, index, value]);
     return value;
   },
-  set_anyref: function(loc, index, value) {
-    console.log('set_anyref ' + [loc, index, value]);
+  set_externref: function(loc, index, value) {
+    console.log('set_externref ' + [loc, index, value]);
     return value;
   },
   set_exnref: function(loc, index, value) {
diff --git a/src/asmjs/asm_v_wasm.cpp b/src/asmjs/asm_v_wasm.cpp
index 2f86370c1cb..4962a43d8b2 100644
--- a/src/asmjs/asm_v_wasm.cpp
+++ b/src/asmjs/asm_v_wasm.cpp
@@ -54,7 +54,7 @@ AsmType wasmToAsmType(Type type) {
     case Type::v128:
       assert(false && "v128 not implemented yet");
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
       assert(false && "reference types are not supported by asm2wasm");
@@ -80,7 +80,7 @@ char getSig(Type type) {
       return 'V';
     case Type::funcref:
       return 'F';
-    case Type::anyref:
+    case Type::externref:
       return 'A';
     case Type::nullref:
       return 'N';
diff --git a/src/binaryen-c.cpp b/src/binaryen-c.cpp
index e6155bad353..f4df69737cc 100644
--- a/src/binaryen-c.cpp
+++ b/src/binaryen-c.cpp
@@ -72,7 +72,7 @@ BinaryenLiteral toBinaryenLiteral(Literal x) {
       break;
     case Type::nullref:
       break;
-    case Type::anyref:
+    case Type::externref:
     case Type::exnref:
     case Type::none:
     case Type::unreachable:
@@ -97,7 +97,7 @@ Literal fromBinaryenLiteral(BinaryenLiteral x) {
       return Literal::makeFuncref(x.func);
     case Type::nullref:
       return Literal::makeNullref();
-    case Type::anyref:
+    case Type::externref:
     case Type::exnref:
     case Type::none:
     case Type::unreachable:
@@ -131,7 +131,7 @@ BinaryenType BinaryenTypeFloat32(void) { return Type::f32; }
 BinaryenType BinaryenTypeFloat64(void) { return Type::f64; }
 BinaryenType BinaryenTypeVec128(void) { return Type::v128; }
 BinaryenType BinaryenTypeFuncref(void) { return Type::funcref; }
-BinaryenType BinaryenTypeAnyref(void) { return Type::anyref; }
+BinaryenType BinaryenTypeExternref(void) { return Type::externref; }
 BinaryenType BinaryenTypeNullref(void) { return Type::nullref; }
 BinaryenType BinaryenTypeExnref(void) { return Type::exnref; }
 BinaryenType BinaryenTypeUnreachable(void) { return Type::unreachable; }
diff --git a/src/binaryen-c.h b/src/binaryen-c.h
index e52d5f46a30..b153a28e98d 100644
--- a/src/binaryen-c.h
+++ b/src/binaryen-c.h
@@ -99,7 +99,7 @@ BINARYEN_API BinaryenType BinaryenTypeFloat32(void);
 BINARYEN_API BinaryenType BinaryenTypeFloat64(void);
 BINARYEN_API BinaryenType BinaryenTypeVec128(void);
 BINARYEN_API BinaryenType BinaryenTypeFuncref(void);
-BINARYEN_API BinaryenType BinaryenTypeAnyref(void);
+BINARYEN_API BinaryenType BinaryenTypeExternref(void);
 BINARYEN_API BinaryenType BinaryenTypeNullref(void);
 BINARYEN_API BinaryenType BinaryenTypeExnref(void);
 BINARYEN_API BinaryenType BinaryenTypeUnreachable(void);
diff --git a/src/gen-s-parser.inc b/src/gen-s-parser.inc
index c7a703aea1c..b501186e4ea 100644
--- a/src/gen-s-parser.inc
+++ b/src/gen-s-parser.inc
@@ -10,7 +10,7 @@ switch (op[0]) {
   case 'a': {
     switch (op[1]) {
       case 'n':
-        if (strcmp(op, "anyref.pop") == 0) { return makePop(Type::anyref); }
+        if (strcmp(op, "externref.pop") == 0) { return makePop(Type::externref); }
         goto parse_error;
       case 't': {
         switch (op[7]) {
diff --git a/src/ir/abstract.h b/src/ir/abstract.h
index f7bc664dd29..e23ffad17ec 100644
--- a/src/ir/abstract.h
+++ b/src/ir/abstract.h
@@ -81,7 +81,7 @@ inline UnaryOp getUnary(Type type, Op op) {
       WASM_UNREACHABLE("v128 not implemented yet");
     }
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -214,7 +214,7 @@ inline BinaryOp getBinary(Type type, Op op) {
       WASM_UNREACHABLE("v128 not implemented yet");
     }
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index dfdb0545737..99fb54350ac 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -39,7 +39,7 @@ function initializeConstants() {
     ['f64', 'Float64'],
     ['v128', 'Vec128'],
     ['funcref', 'Funcref'],
-    ['anyref', 'Anyref'],
+    ['externref', 'Externref'],
     ['nullref', 'Nullref'],
     ['exnref', 'Exnref'],
     ['unreachable', 'Unreachable'],
@@ -2071,9 +2071,9 @@ function wrapModule(module, self) {
     }
   };
 
-  self['anyref'] = {
+  self['externref'] = {
     'pop': function() {
-      return Module['_BinaryenPop'](module, Module['anyref']);
+      return Module['_BinaryenPop'](module, Module['externref']);
     }
   };
 
diff --git a/src/literal.h b/src/literal.h
index 8bfee38c12d..4f936153de8 100644
--- a/src/literal.h
+++ b/src/literal.h
@@ -100,7 +100,7 @@ class Literal {
                                                Literal(int32_t(0)),
                                                Literal(int32_t(0))}});
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -562,7 +562,7 @@ template<> struct less<wasm::Literal> {
       case wasm::Type::v128:
         return memcmp(a.getv128Ptr(), b.getv128Ptr(), 16) < 0;
       case wasm::Type::funcref:
-      case wasm::Type::anyref:
+      case wasm::Type::externref:
       case wasm::Type::nullref:
       case wasm::Type::exnref:
       case wasm::Type::none:
diff --git a/src/parsing.h b/src/parsing.h
index e9b422b9008..fe2889a26ca 100644
--- a/src/parsing.h
+++ b/src/parsing.h
@@ -264,7 +264,7 @@ parseConst(cashew::IString s, Type type, MixedArena& allocator) {
     }
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
       WASM_UNREACHABLE("unexpected const type");
diff --git a/src/passes/ConstHoisting.cpp b/src/passes/ConstHoisting.cpp
index 43c8ccaa7b8..5009cd36451 100644
--- a/src/passes/ConstHoisting.cpp
+++ b/src/passes/ConstHoisting.cpp
@@ -94,7 +94,7 @@ struct ConstHoisting : public WalkerPass<PostWalker<ConstHoisting>> {
         // not implemented yet
       case Type::v128:
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref: {
         return false;
diff --git a/src/passes/Flatten.cpp b/src/passes/Flatten.cpp
index 55ee00936d9..54da8a86e41 100644
--- a/src/passes/Flatten.cpp
+++ b/src/passes/Flatten.cpp
@@ -211,7 +211,7 @@ struct Flatten
             // the return type of the block this branch is targetting, which may
             // not be the same with the innermost block's return type. For
             // example,
-            // (block $any (result anyref)
+            // (block $any (result externref)
             //   (block (result nullref)
             //     (local.tee $0
             //       (br_if $any
@@ -222,7 +222,7 @@ struct Flatten
             //   )
             // )
             // In this case we need two locals to store (ref.null); one with
-            // anyref type that's for the target block ($label0) and one more
+            // externref type that's for the target block ($label0) and one more
             // with nullref type in case for flowing out. Here we create the
             // second 'flowing out' local in case two block's types are
             // different.
diff --git a/src/passes/FuncCastEmulation.cpp b/src/passes/FuncCastEmulation.cpp
index 1fdf97c7bea..93106b5efd8 100644
--- a/src/passes/FuncCastEmulation.cpp
+++ b/src/passes/FuncCastEmulation.cpp
@@ -66,7 +66,7 @@ static Expression* toABI(Expression* value, Module* module) {
       WASM_UNREACHABLE("v128 not implemented yet");
     }
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref: {
       WASM_UNREACHABLE("reference types cannot be converted to i64");
@@ -110,7 +110,7 @@ static Expression* fromABI(Expression* value, Type type, Module* module) {
       WASM_UNREACHABLE("v128 not implemented yet");
     }
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref: {
       WASM_UNREACHABLE("reference types cannot be converted from i64");
diff --git a/src/passes/InstrumentLocals.cpp b/src/passes/InstrumentLocals.cpp
index 256ade4bc7b..aa3df95adc0 100644
--- a/src/passes/InstrumentLocals.cpp
+++ b/src/passes/InstrumentLocals.cpp
@@ -57,7 +57,7 @@ Name get_i64("get_i64");
 Name get_f32("get_f32");
 Name get_f64("get_f64");
 Name get_funcref("get_funcref");
-Name get_anyref("get_anyref");
+Name get_externref("get_externref");
 Name get_nullref("get_nullref");
 Name get_exnref("get_exnref");
 
@@ -66,7 +66,7 @@ Name set_i64("set_i64");
 Name set_f32("set_f32");
 Name set_f64("set_f64");
 Name set_funcref("set_funcref");
-Name set_anyref("set_anyref");
+Name set_externref("set_externref");
 Name set_nullref("set_nullref");
 Name set_exnref("set_exnref");
 
@@ -91,8 +91,8 @@ struct InstrumentLocals : public WalkerPass<PostWalker<InstrumentLocals>> {
       case Type::funcref:
         import = get_funcref;
         break;
-      case Type::anyref:
-        import = get_anyref;
+      case Type::externref:
+        import = get_externref;
         break;
       case Type::nullref:
         import = get_nullref;
@@ -139,8 +139,8 @@ struct InstrumentLocals : public WalkerPass<PostWalker<InstrumentLocals>> {
       case Type::funcref:
         import = set_funcref;
         break;
-      case Type::anyref:
-        import = set_anyref;
+      case Type::externref:
+        import = set_externref;
         break;
       case Type::nullref:
         import = set_nullref;
@@ -180,10 +180,14 @@ struct InstrumentLocals : public WalkerPass<PostWalker<InstrumentLocals>> {
                 set_funcref,
                 {Type::i32, Type::i32, Type::funcref},
                 Type::funcref);
-      addImport(
-        curr, get_anyref, {Type::i32, Type::i32, Type::anyref}, Type::anyref);
-      addImport(
-        curr, set_anyref, {Type::i32, Type::i32, Type::anyref}, Type::anyref);
+      addImport(curr,
+                get_externref,
+                {Type::i32, Type::i32, Type::externref},
+                Type::externref);
+      addImport(curr,
+                set_externref,
+                {Type::i32, Type::i32, Type::externref},
+                Type::externref);
       addImport(curr,
                 get_nullref,
                 {Type::i32, Type::i32, Type::nullref},
diff --git a/src/shell-interface.h b/src/shell-interface.h
index 8c5793bfccc..b4de73c6fc3 100644
--- a/src/shell-interface.h
+++ b/src/shell-interface.h
@@ -115,7 +115,7 @@ struct ShellExternalInterface : ModuleInstance::ExternalInterface {
           case Type::v128:
             assert(false && "v128 not implemented yet");
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
             globals[import->name] = {Literal::makeNullref()};
diff --git a/src/tools/fuzzing.h b/src/tools/fuzzing.h
index 9788d9f11a1..63f4b5a85a5 100644
--- a/src/tools/fuzzing.h
+++ b/src/tools/fuzzing.h
@@ -316,7 +316,7 @@ class TranslateToFuzzReader {
     SmallVector<Type, 2> options;
     options.push_back(type); // includes itself
     switch (type.getSingle()) {
-      case Type::anyref:
+      case Type::externref:
         if (wasm.features.hasExceptionHandling()) {
           options.push_back(Type::exnref);
         }
@@ -1364,7 +1364,7 @@ class TranslateToFuzzReader {
           16, false, offset, pick(1, 2, 4, 8, 16), ptr, type);
       }
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -1468,7 +1468,7 @@ class TranslateToFuzzReader {
           16, offset, pick(1, 2, 4, 8, 16), ptr, value, type);
       }
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -1565,7 +1565,7 @@ class TranslateToFuzzReader {
             return Literal(getDouble());
           case Type::v128:
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
           case Type::none:
@@ -1610,7 +1610,7 @@ class TranslateToFuzzReader {
             return Literal(double(small));
           case Type::v128:
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
           case Type::none:
@@ -1678,7 +1678,7 @@ class TranslateToFuzzReader {
             break;
           case Type::v128:
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
           case Type::none:
@@ -1712,7 +1712,7 @@ class TranslateToFuzzReader {
             break;
           case Type::v128:
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
           case Type::none:
@@ -1824,7 +1824,7 @@ class TranslateToFuzzReader {
                                make(Type::v128)});
           }
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
             return makeTrivial(type);
@@ -1969,7 +1969,7 @@ class TranslateToFuzzReader {
         WASM_UNREACHABLE("invalid value");
       }
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -2206,7 +2206,7 @@ class TranslateToFuzzReader {
                             make(Type::v128)});
       }
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -2413,7 +2413,7 @@ class TranslateToFuzzReader {
         break;
       case Type::v128:
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -2588,9 +2588,10 @@ class TranslateToFuzzReader {
     assert(wasm.features.hasReferenceTypes());
     Type refType;
     if (wasm.features.hasExceptionHandling()) {
-      refType = pick(Type::funcref, Type::anyref, Type::nullref, Type::exnref);
+      refType =
+        pick(Type::funcref, Type::externref, Type::nullref, Type::exnref);
     } else {
-      refType = pick(Type::funcref, Type::anyref, Type::nullref);
+      refType = pick(Type::funcref, Type::externref, Type::nullref);
     }
     return builder.makeRefIsNull(make(refType));
   }
@@ -2657,7 +2658,7 @@ class TranslateToFuzzReader {
         .add(FeatureSet::SIMD, Type::v128)
         .add(FeatureSet::ReferenceTypes,
              Type::funcref,
-             Type::anyref,
+             Type::externref,
              Type::nullref)
         .add(FeatureSet::ReferenceTypes | FeatureSet::ExceptionHandling,
              Type::exnref));
@@ -2700,7 +2701,7 @@ class TranslateToFuzzReader {
 
   // - funcref cannot be logged because referenced functions can be inlined or
   // removed during optimization
-  // - there's no point in logging anyref because it is opaque
+  // - there's no point in logging externref because it is opaque
   // - don't bother logging tuples
   std::vector<Type> getLoggableTypes() {
     return items(
diff --git a/src/tools/spec-wrapper.h b/src/tools/spec-wrapper.h
index c6b6cc9c93f..a77dfc43f21 100644
--- a/src/tools/spec-wrapper.h
+++ b/src/tools/spec-wrapper.h
@@ -49,7 +49,7 @@ static std::string generateSpecWrapper(Module& wasm) {
           ret += "(v128.const i32x4 0 0 0 0)";
           break;
         case Type::funcref:
-        case Type::anyref:
+        case Type::externref:
         case Type::nullref:
         case Type::exnref:
           ret += "(ref.null)";
diff --git a/src/tools/wasm-reduce.cpp b/src/tools/wasm-reduce.cpp
index d55dab893be..ab593c76c0f 100644
--- a/src/tools/wasm-reduce.cpp
+++ b/src/tools/wasm-reduce.cpp
@@ -594,7 +594,7 @@ struct Reducer
                 break;
               case Type::v128:
               case Type::funcref:
-              case Type::anyref:
+              case Type::externref:
               case Type::nullref:
               case Type::exnref:
                 continue; // not implemented yet
@@ -619,7 +619,7 @@ struct Reducer
                 break;
               case Type::v128:
               case Type::funcref:
-              case Type::anyref:
+              case Type::externref:
               case Type::nullref:
               case Type::exnref:
                 continue; // not implemented yet
@@ -644,7 +644,7 @@ struct Reducer
                 break;
               case Type::v128:
               case Type::funcref:
-              case Type::anyref:
+              case Type::externref:
               case Type::nullref:
               case Type::exnref:
                 continue; // not implemented yet
@@ -669,7 +669,7 @@ struct Reducer
                 WASM_UNREACHABLE("unexpected type");
               case Type::v128:
               case Type::funcref:
-              case Type::anyref:
+              case Type::externref:
               case Type::nullref:
               case Type::exnref:
                 continue; // not implemented yet
@@ -681,7 +681,7 @@ struct Reducer
           }
           case Type::v128:
           case Type::funcref:
-          case Type::anyref:
+          case Type::externref:
           case Type::nullref:
           case Type::exnref:
             continue; // not implemented yet
diff --git a/src/wasm-binary.h b/src/wasm-binary.h
index b8d14377d13..db93c86de10 100644
--- a/src/wasm-binary.h
+++ b/src/wasm-binary.h
@@ -345,8 +345,8 @@ enum EncodedType {
   v128 = -0x5, // 0x7b
   // function reference type
   funcref = -0x10, // 0x70
-  // opaque reference type
-  anyref = -0x11, // 0x6f
+  // opaque host reference type
+  externref = -0x11, // 0x6f
   // null reference type
   nullref = -0x12, // 0x6e
   // exception reference type
@@ -961,8 +961,8 @@ inline S32LEB binaryType(Type type) {
     case Type::funcref:
       ret = BinaryConsts::EncodedType::funcref;
       break;
-    case Type::anyref:
-      ret = BinaryConsts::EncodedType::anyref;
+    case Type::externref:
+      ret = BinaryConsts::EncodedType::externref;
       break;
     case Type::nullref:
       ret = BinaryConsts::EncodedType::nullref;
diff --git a/src/wasm-builder.h b/src/wasm-builder.h
index 5df512745f0..5c6792a82b2 100644
--- a/src/wasm-builder.h
+++ b/src/wasm-builder.h
@@ -818,7 +818,7 @@ class Builder {
         break;
       }
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
         return ExpressionManipulator::refNull(curr);
diff --git a/src/wasm-interpreter.h b/src/wasm-interpreter.h
index 86ea7e146ea..124ba9aae6f 100644
--- a/src/wasm-interpreter.h
+++ b/src/wasm-interpreter.h
@@ -1642,7 +1642,7 @@ template<typename GlobalManager, typename SubType> class ModuleInstanceBase {
         case Type::v128:
           return Literal(load128(addr).data());
         case Type::funcref:
-        case Type::anyref:
+        case Type::externref:
         case Type::nullref:
         case Type::exnref:
         case Type::none:
@@ -1699,7 +1699,7 @@ template<typename GlobalManager, typename SubType> class ModuleInstanceBase {
           store128(addr, value.getv128());
           break;
         case Type::funcref:
-        case Type::anyref:
+        case Type::externref:
         case Type::nullref:
         case Type::exnref:
         case Type::none:
diff --git a/src/wasm-type.h b/src/wasm-type.h
index cfd47a8e0bf..b0cfa40941a 100644
--- a/src/wasm-type.h
+++ b/src/wasm-type.h
@@ -41,7 +41,7 @@ class Type {
     f64,
     v128,
     funcref,
-    anyref,
+    externref,
     nullref,
     exnref,
     _last_value_type = exnref
diff --git a/src/wasm/literal.cpp b/src/wasm/literal.cpp
index 5aebf30a337..29d0477232e 100644
--- a/src/wasm/literal.cpp
+++ b/src/wasm/literal.cpp
@@ -59,7 +59,7 @@ Literal& Literal::operator=(const Literal& other) {
     case Type::none:
     case Type::nullref:
       break;
-    case Type::anyref:
+    case Type::externref:
     case Type::unreachable:
       WASM_UNREACHABLE("unexpected type");
   }
@@ -191,7 +191,7 @@ void Literal::getBits(uint8_t (&buf)[16]) const {
     case Type::funcref:
     case Type::nullref:
       break;
-    case Type::anyref:
+    case Type::externref:
     case Type::exnref:
     case Type::none:
     case Type::unreachable:
@@ -346,7 +346,7 @@ std::ostream& operator<<(std::ostream& o, Literal literal) {
     case Type::exnref:
       o << "exnref(" << literal.getExceptionPackage() << ")";
       break;
-    case Type::anyref:
+    case Type::externref:
     case Type::unreachable:
       WASM_UNREACHABLE("invalid type");
   }
@@ -569,7 +569,7 @@ Literal Literal::eqz() const {
       return eq(Literal(double(0)));
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -591,7 +591,7 @@ Literal Literal::neg() const {
       return Literal(int64_t(i64 ^ 0x8000000000000000ULL)).castToF64();
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -613,7 +613,7 @@ Literal Literal::abs() const {
       return Literal(int64_t(i64 & 0x7fffffffffffffffULL)).castToF64();
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -718,7 +718,7 @@ Literal Literal::add(const Literal& other) const {
       return Literal(getf64() + other.getf64());
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -740,7 +740,7 @@ Literal Literal::sub(const Literal& other) const {
       return Literal(getf64() - other.getf64());
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -833,7 +833,7 @@ Literal Literal::mul(const Literal& other) const {
       return Literal(getf64() * other.getf64());
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -1071,7 +1071,7 @@ Literal Literal::eq(const Literal& other) const {
       return Literal(getf64() == other.getf64());
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -1093,7 +1093,7 @@ Literal Literal::ne(const Literal& other) const {
       return Literal(getf64() != other.getf64());
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
diff --git a/src/wasm/wasm-binary.cpp b/src/wasm/wasm-binary.cpp
index a766e9b6330..8a7f0d744f5 100644
--- a/src/wasm/wasm-binary.cpp
+++ b/src/wasm/wasm-binary.cpp
@@ -1132,8 +1132,8 @@ Type WasmBinaryBuilder::getType() {
       return Type::v128;
     case BinaryConsts::EncodedType::funcref:
       return Type::funcref;
-    case BinaryConsts::EncodedType::anyref:
-      return Type::anyref;
+    case BinaryConsts::EncodedType::externref:
+      return Type::externref;
     case BinaryConsts::EncodedType::nullref:
       return Type::nullref;
     case BinaryConsts::EncodedType::exnref:
diff --git a/src/wasm/wasm-s-parser.cpp b/src/wasm/wasm-s-parser.cpp
index 7ca8dd131ba..429cac27343 100644
--- a/src/wasm/wasm-s-parser.cpp
+++ b/src/wasm/wasm-s-parser.cpp
@@ -866,8 +866,8 @@ Type SExpressionWasmBuilder::stringToType(const char* str,
   if (strncmp(str, "funcref", 7) == 0 && (prefix || str[7] == 0)) {
     return Type::funcref;
   }
-  if (strncmp(str, "anyref", 6) == 0 && (prefix || str[6] == 0)) {
-    return Type::anyref;
+  if (strncmp(str, "externref", 9) == 0 && (prefix || str[9] == 0)) {
+    return Type::externref;
   }
   if (strncmp(str, "nullref", 7) == 0 && (prefix || str[7] == 0)) {
     return Type::nullref;
diff --git a/src/wasm/wasm-stack.cpp b/src/wasm/wasm-stack.cpp
index 9ebf39fb894..c6c450cfba0 100644
--- a/src/wasm/wasm-stack.cpp
+++ b/src/wasm/wasm-stack.cpp
@@ -188,7 +188,7 @@ void BinaryInstWriter::visitLoad(Load* curr) {
         // a load
         return;
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -290,7 +290,7 @@ void BinaryInstWriter::visitStore(Store* curr) {
           << U32LEB(BinaryConsts::V128Store);
         break;
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -687,7 +687,7 @@ void BinaryInstWriter::visitConst(Const* curr) {
       break;
     }
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
diff --git a/src/wasm/wasm-type.cpp b/src/wasm/wasm-type.cpp
index 8467e217677..b49f0338f38 100644
--- a/src/wasm/wasm-type.cpp
+++ b/src/wasm/wasm-type.cpp
@@ -64,7 +64,7 @@ std::array<std::vector<Type>, Type::_last_value_type + 1> basicTypes = {
    {Type::f64},
    {Type::v128},
    {Type::funcref},
-   {Type::anyref},
+   {Type::externref},
    {Type::nullref},
    {Type::exnref}}};
 
@@ -81,7 +81,7 @@ std::unordered_map<std::vector<Type>, uintptr_t> indices = {
   {{Type::f64}, Type::f64},
   {{Type::v128}, Type::v128},
   {{Type::funcref}, Type::funcref},
-  {{Type::anyref}, Type::anyref},
+  {{Type::externref}, Type::externref},
   {{Type::nullref}, Type::nullref},
   {{Type::exnref}, Type::exnref},
 };
@@ -156,7 +156,7 @@ unsigned Type::getByteSize() const {
       case Type::v128:
         return 16;
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
       case Type::exnref:
       case Type::none:
@@ -191,7 +191,7 @@ Type Type::reinterpret() const {
       return i64;
     case Type::v128:
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -207,7 +207,7 @@ FeatureSet Type::getFeatures() const {
       case Type::v128:
         return FeatureSet::SIMD;
       case Type::funcref:
-      case Type::anyref:
+      case Type::externref:
       case Type::nullref:
         return FeatureSet::ReferenceTypes;
       case Type::exnref:
@@ -249,7 +249,7 @@ bool Type::isSubType(Type left, Type right) {
     return true;
   }
   if (left.isRef() && right.isRef() &&
-      (right == Type::anyref || left == Type::nullref)) {
+      (right == Type::externref || left == Type::nullref)) {
     return true;
   }
   if (left.isMulti() && right.isMulti()) {
@@ -303,7 +303,7 @@ Type Type::getLeastUpperBound(Type a, Type b) {
   if (b == Type::nullref) {
     return a;
   }
-  return Type::anyref;
+  return Type::externref;
 }
 
 namespace {
@@ -379,8 +379,8 @@ std::ostream& operator<<(std::ostream& os, Type type) {
       case Type::funcref:
         os << "funcref";
         break;
-      case Type::anyref:
-        os << "anyref";
+      case Type::externref:
+        os << "externref";
         break;
       case Type::nullref:
         os << "nullref";
diff --git a/src/wasm/wasm-validator.cpp b/src/wasm/wasm-validator.cpp
index 97e45d47101..2c2aac1c862 100644
--- a/src/wasm/wasm-validator.cpp
+++ b/src/wasm/wasm-validator.cpp
@@ -1260,7 +1260,7 @@ void FunctionValidator::validateMemBytes(uint8_t bytes,
     case Type::unreachable:
       break;
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
@@ -2068,7 +2068,7 @@ void FunctionValidator::validateAlignment(
     case Type::unreachable:
       break;
     case Type::funcref:
-    case Type::anyref:
+    case Type::externref:
     case Type::nullref:
     case Type::exnref:
     case Type::none:
diff --git a/test/anyref.wast.from-wast b/test/anyref.wast.from-wast
deleted file mode 100644
index 121a4616a51..00000000000
--- a/test/anyref.wast.from-wast
+++ /dev/null
@@ -1,19 +0,0 @@
-(module
- (type $anyref_=>_anyref (func (param anyref) (result anyref)))
- (import "env" "test2" (global $test2 anyref))
- (import "env" "test1" (func $test1 (param anyref) (result anyref)))
- (memory $0 1 1)
- (export "test1" (func $test1))
- (export "test2" (global $test2))
- (func $anyref_test (; 1 ;) (param $0 anyref) (result anyref)
-  (local $1 anyref)
-  (local.set $1
-   (call $test1
-    (local.get $0)
-   )
-  )
-  (return
-   (local.get $1)
-  )
- )
-)
diff --git a/test/anyref.wast.fromBinary b/test/anyref.wast.fromBinary
deleted file mode 100644
index 374a308e721..00000000000
--- a/test/anyref.wast.fromBinary
+++ /dev/null
@@ -1,20 +0,0 @@
-(module
- (type $anyref_=>_anyref (func (param anyref) (result anyref)))
- (import "env" "test2" (global $gimport$1 anyref))
- (import "env" "test1" (func $test1 (param anyref) (result anyref)))
- (memory $0 1 1)
- (export "test1" (func $test1))
- (export "test2" (global $gimport$1))
- (func $anyref_test (; 1 ;) (param $0 anyref) (result anyref)
-  (local $1 anyref)
-  (local.set $1
-   (call $test1
-    (local.get $0)
-   )
-  )
-  (return
-   (local.get $1)
-  )
- )
-)
-
diff --git a/test/anyref.wast.fromBinary.noDebugInfo b/test/anyref.wast.fromBinary.noDebugInfo
deleted file mode 100644
index 2f532e6f17f..00000000000
--- a/test/anyref.wast.fromBinary.noDebugInfo
+++ /dev/null
@@ -1,20 +0,0 @@
-(module
- (type $anyref_=>_anyref (func (param anyref) (result anyref)))
- (import "env" "test2" (global $gimport$1 anyref))
- (import "env" "test1" (func $fimport$0 (param anyref) (result anyref)))
- (memory $0 1 1)
- (export "test1" (func $fimport$0))
- (export "test2" (global $gimport$1))
- (func $0 (; 1 ;) (param $0 anyref) (result anyref)
-  (local $1 anyref)
-  (local.set $1
-   (call $fimport$0
-    (local.get $0)
-   )
-  )
-  (return
-   (local.get $1)
-  )
- )
-)
-
diff --git a/test/binaryen.js/kitchen-sink.js b/test/binaryen.js/kitchen-sink.js
index cd3af675023..93ed273340b 100644
--- a/test/binaryen.js/kitchen-sink.js
+++ b/test/binaryen.js/kitchen-sink.js
@@ -68,8 +68,8 @@ function test_types() {
   console.log("  // BinaryenTypeVec128: " + binaryen.v128);
   console.log("  //", binaryen.expandType(binaryen.v128));
 
-  console.log("  // BinaryenTypeAnyref: " + binaryen.anyref);
-  console.log("  //", binaryen.expandType(binaryen.anyref));
+  console.log("  // BinaryenTypeExternref: " + binaryen.externref);
+  console.log("  //", binaryen.expandType(binaryen.externref));
 
   console.log("  // BinaryenTypeExnref: " + binaryen.exnref);
   console.log("  //", binaryen.expandType(binaryen.exnref));
@@ -561,7 +561,7 @@ function test_core() {
     module.f32.pop(),
     module.f64.pop(),
     module.v128.pop(),
-    module.anyref.pop(),
+    module.externref.pop(),
     module.funcref.pop(),
     module.nullref.pop(),
     module.exnref.pop(),
diff --git a/test/binaryen.js/kitchen-sink.js.txt b/test/binaryen.js/kitchen-sink.js.txt
index d81ea53125a..9f8ac58783e 100644
--- a/test/binaryen.js/kitchen-sink.js.txt
+++ b/test/binaryen.js/kitchen-sink.js.txt
@@ -12,7 +12,7 @@
   // [ 5 ]
   // BinaryenTypeVec128: 6
   // [ 6 ]
-  // BinaryenTypeAnyref: 8
+  // BinaryenTypeExternref: 8
   // [ 8 ]
   // BinaryenTypeExnref: 10
   // [ 10 ]
@@ -1901,7 +1901,7 @@ getExpressionInfo(tuple[3])={"id":14,"type":5,"value":3.7}
        (v128.pop)
       )
       (drop
-       (anyref.pop)
+       (externref.pop)
       )
       (drop
        (funcref.pop)
@@ -3739,7 +3739,7 @@ getExpressionInfo(tuple[3])={"id":14,"type":5,"value":3.7}
        (v128.pop)
       )
       (drop
-       (anyref.pop)
+       (externref.pop)
       )
       (drop
        (funcref.pop)
@@ -4270,7 +4270,7 @@ module loaded from binary form:
  )
 )
 
-[wasm-validator error in function func] local.set's value type must be correct, on 
+[wasm-validator error in function func] local.set's value type must be correct, on
 [none] (local.set $0
  [i64] (i64.const 1234)
 )
diff --git a/test/example/c-api-kitchen-sink.c b/test/example/c-api-kitchen-sink.c
index 1f6ffc9fc00..b1dbae7d53b 100644
--- a/test/example/c-api-kitchen-sink.c
+++ b/test/example/c-api-kitchen-sink.c
@@ -199,11 +199,11 @@ void test_types() {
   BinaryenTypeExpand(funcref, &valueType);
   assert(valueType == funcref);
 
-  BinaryenType anyref = BinaryenTypeAnyref();
-  printf("  // BinaryenTypeAnyref: %d\n", anyref);
-  assert(BinaryenTypeArity(anyref) == 1);
-  BinaryenTypeExpand(anyref, &valueType);
-  assert(valueType == anyref);
+  BinaryenType externref = BinaryenTypeExternref();
+  printf("  // BinaryenTypeExternref: %d\n", externref);
+  assert(BinaryenTypeArity(externref) == 1);
+  BinaryenTypeExpand(externref, &valueType);
+  assert(valueType == externref);
 
   BinaryenType nullref = BinaryenTypeNullref();
   printf("  // BinaryenTypeNullref: %d\n", nullref);
@@ -747,7 +747,7 @@ void test_core() {
     BinaryenPop(module, BinaryenTypeFloat32()),
     BinaryenPop(module, BinaryenTypeFloat64()),
     BinaryenPop(module, BinaryenTypeFuncref()),
-    BinaryenPop(module, BinaryenTypeAnyref()),
+    BinaryenPop(module, BinaryenTypeExternref()),
     BinaryenPop(module, BinaryenTypeNullref()),
     BinaryenPop(module, BinaryenTypeExnref()),
     BinaryenPop(module, BinaryenTypeFuncref()),
diff --git a/test/example/c-api-kitchen-sink.txt b/test/example/c-api-kitchen-sink.txt
index ff9256fda81..b0aae7f3b30 100644
--- a/test/example/c-api-kitchen-sink.txt
+++ b/test/example/c-api-kitchen-sink.txt
@@ -6,7 +6,7 @@
   // BinaryenTypeFloat64: 5
   // BinaryenTypeVec128: 6
   // BinaryenTypeFuncref: 7
-  // BinaryenTypeAnyref: 8
+  // BinaryenTypeExternref: 8
   // BinaryenTypeNullref: 9
   // BinaryenTypeExnref: 10
   // BinaryenTypeAuto: -1
@@ -1843,7 +1843,7 @@ BinaryenFeatureAll: 1023
        (funcref.pop)
       )
       (drop
-       (anyref.pop)
+       (externref.pop)
       )
       (drop
        (nullref.pop)
diff --git a/test/example/c-api-kitchen-sink.txt.txt b/test/example/c-api-kitchen-sink.txt.txt
index 44ac3320a04..d3cc32e8da8 100644
--- a/test/example/c-api-kitchen-sink.txt.txt
+++ b/test/example/c-api-kitchen-sink.txt.txt
@@ -1739,7 +1739,7 @@
        (funcref.pop)
       )
       (push
-       (anyref.pop)
+       (externref.pop)
       )
       (push
        (nullref.pop)
diff --git a/test/exception-handling.wast b/test/exception-handling.wast
index 57766c2d300..7f16a237b02 100644
--- a/test/exception-handling.wast
+++ b/test/exception-handling.wast
@@ -1,6 +1,6 @@
 (module
   (event $e0 (attr 0) (param i32))
-  (event $e1 (attr 0) (param anyref))
+  (event $e1 (attr 0) (param externref))
 
   (func $exnref_test (param $0 exnref) (result exnref)
     (local.get $0)
diff --git a/test/exception-handling.wast.from-wast b/test/exception-handling.wast.from-wast
index 05993022c36..4430bf0f0af 100644
--- a/test/exception-handling.wast.from-wast
+++ b/test/exception-handling.wast.from-wast
@@ -1,10 +1,10 @@
 (module
  (type $none_=>_none (func))
  (type $i32_=>_none (func (param i32)))
- (type $anyref_=>_none (func (param anyref)))
+ (type $externref_=>_none (func (param externref)))
  (type $exnref_=>_exnref (func (param exnref) (result exnref)))
  (event $e0 (attr 0) (param i32))
- (event $e1 (attr 0) (param anyref))
+ (event $e1 (attr 0) (param externref))
  (func $exnref_test (param $0 exnref) (result exnref)
   (local.get $0)
  )
diff --git a/test/exception-handling.wast.fromBinary b/test/exception-handling.wast.fromBinary
index 9c4ebad3b1c..fc3dc38041d 100644
--- a/test/exception-handling.wast.fromBinary
+++ b/test/exception-handling.wast.fromBinary
@@ -1,10 +1,10 @@
 (module
  (type $none_=>_none (func))
  (type $i32_=>_none (func (param i32)))
- (type $anyref_=>_none (func (param anyref)))
+ (type $externref_=>_none (func (param externref)))
  (type $exnref_=>_exnref (func (param exnref) (result exnref)))
  (event $event$0 (attr 0) (param i32))
- (event $event$1 (attr 0) (param anyref))
+ (event $event$1 (attr 0) (param externref))
  (func $exnref_test (param $0 exnref) (result exnref)
   (local.get $0)
  )
diff --git a/test/exception-handling.wast.fromBinary.noDebugInfo b/test/exception-handling.wast.fromBinary.noDebugInfo
index 97bda57c4da..96cc9c4c6ea 100644
--- a/test/exception-handling.wast.fromBinary.noDebugInfo
+++ b/test/exception-handling.wast.fromBinary.noDebugInfo
@@ -1,10 +1,10 @@
 (module
  (type $none_=>_none (func))
  (type $i32_=>_none (func (param i32)))
- (type $anyref_=>_none (func (param anyref)))
+ (type $externref_=>_none (func (param externref)))
  (type $exnref_=>_exnref (func (param exnref) (result exnref)))
  (event $event$0 (attr 0) (param i32))
- (event $event$1 (attr 0) (param anyref))
+ (event $event$1 (attr 0) (param externref))
  (func $0 (param $0 exnref) (result exnref)
   (local.get $0)
  )
diff --git a/test/externref.wast.from-wast b/test/externref.wast.from-wast
new file mode 100644
index 00000000000..514123aabb1
--- /dev/null
+++ b/test/externref.wast.from-wast
@@ -0,0 +1,19 @@
+(module
+ (type $externref_=>_externref (func (param externref) (result externref)))
+ (import "env" "test2" (global $test2 externref))
+ (import "env" "test1" (func $test1 (param externref) (result externref)))
+ (memory $0 1 1)
+ (export "test1" (func $test1))
+ (export "test2" (global $test2))
+ (func $externref_test (; 1 ;) (param $0 externref) (result externref)
+  (local $1 externref)
+  (local.set $1
+   (call $test1
+    (local.get $0)
+   )
+  )
+  (return
+   (local.get $1)
+  )
+ )
+)
diff --git a/test/externref.wast.fromBinary b/test/externref.wast.fromBinary
new file mode 100644
index 00000000000..ab2d2f96398
--- /dev/null
+++ b/test/externref.wast.fromBinary
@@ -0,0 +1,20 @@
+(module
+ (type $externref_=>_externref (func (param externref) (result externref)))
+ (import "env" "test2" (global $gimport$1 externref))
+ (import "env" "test1" (func $test1 (param externref) (result externref)))
+ (memory $0 1 1)
+ (export "test1" (func $test1))
+ (export "test2" (global $gimport$1))
+ (func $externref_test (; 1 ;) (param $0 externref) (result externref)
+  (local $1 externref)
+  (local.set $1
+   (call $test1
+    (local.get $0)
+   )
+  )
+  (return
+   (local.get $1)
+  )
+ )
+)
+
diff --git a/test/externref.wast.fromBinary.noDebugInfo b/test/externref.wast.fromBinary.noDebugInfo
new file mode 100644
index 00000000000..44d9029bef7
--- /dev/null
+++ b/test/externref.wast.fromBinary.noDebugInfo
@@ -0,0 +1,20 @@
+(module
+ (type $externref_=>_externref (func (param externref) (result externref)))
+ (import "env" "test2" (global $gimport$1 externref))
+ (import "env" "test1" (func $fimport$0 (param externref) (result externref)))
+ (memory $0 1 1)
+ (export "test1" (func $fimport$0))
+ (export "test2" (global $gimport$1))
+ (func $0 (; 1 ;) (param $0 externref) (result externref)
+  (local $1 externref)
+  (local.set $1
+   (call $fimport$0
+    (local.get $0)
+   )
+  )
+  (return
+   (local.get $1)
+  )
+ )
+)
+
diff --git a/test/multivalue.wast b/test/multivalue.wast
index d740d384f45..01e1237f37f 100644
--- a/test/multivalue.wast
+++ b/test/multivalue.wast
@@ -128,7 +128,7 @@
    )
   )
  )
- (func $mv-if (result i32 i64 anyref)
+ (func $mv-if (result i32 i64 externref)
   (if (result i32 i64 nullref)
    (i32.const 1)
    (tuple.make
diff --git a/test/multivalue.wast.from-wast b/test/multivalue.wast.from-wast
index 480bf775f9a..db0a4b2d0ab 100644
--- a/test/multivalue.wast.from-wast
+++ b/test/multivalue.wast.from-wast
@@ -5,7 +5,7 @@
  (type $none_=>_f32_i64_i32 (func (result f32 i64 i32)))
  (type $none_=>_i32 (func (result i32)))
  (type $none_=>_i32_i64_f32 (func (result i32 i64 f32)))
- (type $none_=>_i32_i64_anyref (func (result i32 i64 anyref)))
+ (type $none_=>_i32_i64_externref (func (result i32 i64 externref)))
  (type $none_=>_i32_i64_nullref (func (result i32 i64 nullref)))
  (type $none_=>_f32 (func (result f32)))
  (import "env" "pair" (func $pair (result i32 i64)))
@@ -136,7 +136,7 @@
    )
   )
  )
- (func $mv-if (result i32 i64 anyref)
+ (func $mv-if (result i32 i64 externref)
   (if (result i32 i64 nullref)
    (i32.const 1)
    (tuple.make
diff --git a/test/multivalue.wast.fromBinary b/test/multivalue.wast.fromBinary
index b18c403c8b6..190194fcf2c 100644
--- a/test/multivalue.wast.fromBinary
+++ b/test/multivalue.wast.fromBinary
@@ -1,7 +1,7 @@
 (module
  (type $none_=>_i32_i64 (func (result i32 i64)))
  (type $none_=>_none (func))
- (type $none_=>_i32_i64_anyref (func (result i32 i64 anyref)))
+ (type $none_=>_i32_i64_externref (func (result i32 i64 externref)))
  (type $none_=>_i64 (func (result i64)))
  (type $none_=>_f32_i64_i32 (func (result f32 i64 i32)))
  (type $none_=>_i32 (func (result i32)))
@@ -390,7 +390,7 @@
    )
   )
  )
- (func $mv-if (result i32 i64 anyref)
+ (func $mv-if (result i32 i64 externref)
   (local $0 (i32 i64 nullref))
   (local.set $0
    (if (result i32 i64 nullref)
diff --git a/test/multivalue.wast.fromBinary.noDebugInfo b/test/multivalue.wast.fromBinary.noDebugInfo
index 3b696393db7..226490f2689 100644
--- a/test/multivalue.wast.fromBinary.noDebugInfo
+++ b/test/multivalue.wast.fromBinary.noDebugInfo
@@ -1,7 +1,7 @@
 (module
  (type $none_=>_i32_i64 (func (result i32 i64)))
  (type $none_=>_none (func))
- (type $none_=>_i32_i64_anyref (func (result i32 i64 anyref)))
+ (type $none_=>_i32_i64_externref (func (result i32 i64 externref)))
  (type $none_=>_i64 (func (result i64)))
  (type $none_=>_f32_i64_i32 (func (result f32 i64 i32)))
  (type $none_=>_i32 (func (result i32)))
@@ -390,7 +390,7 @@
    )
   )
  )
- (func $14 (result i32 i64 anyref)
+ (func $14 (result i32 i64 externref)
   (local $0 (i32 i64 nullref))
   (local.set $0
    (if (result i32 i64 nullref)
diff --git a/test/passes/flatten_all-features.txt b/test/passes/flatten_all-features.txt
index c633eccc8d7..e52f9e82612 100644
--- a/test/passes/flatten_all-features.txt
+++ b/test/passes/flatten_all-features.txt
@@ -5,7 +5,7 @@
  (type $i32_=>_i32 (func (param i32) (result i32)))
  (type $none_=>_f32 (func (result f32)))
  (type $i64_i64_=>_i64 (func (param i64 i64) (result i64)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $none_=>_externref (func (result externref)))
  (memory $0 10)
  (table $0 1 1 funcref)
  (elem (i32.const 0) $call-me)
@@ -2376,15 +2376,15 @@
   )
   (unreachable)
  )
- (func $subtype (result anyref)
+ (func $subtype (result externref)
   (local $0 nullref)
-  (local $1 anyref)
+  (local $1 externref)
   (local $2 nullref)
   (local $3 nullref)
   (local $4 nullref)
   (local $5 nullref)
   (local $6 nullref)
-  (local $7 anyref)
+  (local $7 externref)
   (block $label0
    (block $block
     (local.set $1
diff --git a/test/passes/flatten_all-features.wast b/test/passes/flatten_all-features.wast
index 461ce61706d..f07175bd2d2 100644
--- a/test/passes/flatten_all-features.wast
+++ b/test/passes/flatten_all-features.wast
@@ -1027,8 +1027,8 @@
   ;; targets an outer branch whose return type is a supertype of the br_if's
   ;; value type, we need the value to be set into two locals: one with the outer
   ;; block's type, and one with its value type.
-  (func $subtype (result anyref) (local $0 nullref)
-    (block $label0 (result anyref)
+  (func $subtype (result externref) (local $0 nullref)
+    (block $label0 (result externref)
       (block (result nullref)
         (local.tee $0
           (br_if $label0
diff --git a/test/passes/flatten_local-cse_all-features.txt b/test/passes/flatten_local-cse_all-features.txt
index c80611abe69..5f3adace77c 100644
--- a/test/passes/flatten_local-cse_all-features.txt
+++ b/test/passes/flatten_local-cse_all-features.txt
@@ -794,7 +794,7 @@
   )
  )
  (func $test
-  (local $0 anyref)
+  (local $0 externref)
   (local $1 nullref)
   (local $2 nullref)
   (block $label$1
diff --git a/test/passes/flatten_local-cse_all-features.wast b/test/passes/flatten_local-cse_all-features.wast
index 112dfe64738..1b4dc37c2e0 100644
--- a/test/passes/flatten_local-cse_all-features.wast
+++ b/test/passes/flatten_local-cse_all-features.wast
@@ -300,7 +300,7 @@
  )
 
  (func $test
-  (local $0 anyref)
+  (local $0 externref)
   (drop
    (block $label$1 (result nullref)
     (local.set $0
@@ -308,7 +308,7 @@
     )
     ;; After --flatten, this will be assigned to a local of nullref type. After
     ;; --local-cse, even if we set (ref.null) to local $0 above, this should not
-    ;; be replaced with $0, because it is of type anyref.
+    ;; be replaced with $0, because it is of type externref.
     (ref.null)
    )
   )
diff --git a/test/passes/instrument-locals_all-features.txt b/test/passes/instrument-locals_all-features.txt
index 2627c9cdeb7..be07240ac93 100644
--- a/test/passes/instrument-locals_all-features.txt
+++ b/test/passes/instrument-locals_all-features.txt
@@ -4,7 +4,7 @@
  (type $i32_i32_f32_=>_f32 (func (param i32 i32 f32) (result f32)))
  (type $i32_i32_f64_=>_f64 (func (param i32 i32 f64) (result f64)))
  (type $i32_i32_funcref_=>_funcref (func (param i32 i32 funcref) (result funcref)))
- (type $i32_i32_anyref_=>_anyref (func (param i32 i32 anyref) (result anyref)))
+ (type $i32_i32_externref_=>_externref (func (param i32 i32 externref) (result externref)))
  (type $i32_i32_nullref_=>_nullref (func (param i32 i32 nullref) (result nullref)))
  (type $i32_i32_exnref_=>_exnref (func (param i32 i32 exnref) (result exnref)))
  (type $none_=>_none (func))
@@ -18,8 +18,8 @@
  (import "env" "set_f64" (func $set_f64 (param i32 i32 f64) (result f64)))
  (import "env" "get_funcref" (func $get_funcref (param i32 i32 funcref) (result funcref)))
  (import "env" "set_funcref" (func $set_funcref (param i32 i32 funcref) (result funcref)))
- (import "env" "get_anyref" (func $get_anyref (param i32 i32 anyref) (result anyref)))
- (import "env" "set_anyref" (func $set_anyref (param i32 i32 anyref) (result anyref)))
+ (import "env" "get_externref" (func $get_externref (param i32 i32 externref) (result externref)))
+ (import "env" "set_externref" (func $set_externref (param i32 i32 externref) (result externref)))
  (import "env" "get_nullref" (func $get_nullref (param i32 i32 nullref) (result nullref)))
  (import "env" "set_nullref" (func $set_nullref (param i32 i32 nullref) (result nullref)))
  (import "env" "get_exnref" (func $get_exnref (param i32 i32 exnref) (result exnref)))
@@ -30,7 +30,7 @@
   (local $z f32)
   (local $w f64)
   (local $F funcref)
-  (local $A anyref)
+  (local $A externref)
   (local $N nullref)
   (local $E exnref)
   (drop
@@ -65,7 +65,7 @@
    )
   )
   (drop
-   (call $get_anyref
+   (call $get_externref
     (i32.const 4)
     (i32.const 5)
     (local.get $A)
@@ -117,7 +117,7 @@
    )
   )
   (drop
-   (call $get_anyref
+   (call $get_externref
     (i32.const 11)
     (i32.const 5)
     (local.get $A)
@@ -169,10 +169,10 @@
    )
   )
   (local.set $A
-   (call $set_anyref
+   (call $set_externref
     (i32.const 19)
     (i32.const 5)
-    (call $get_anyref
+    (call $get_externref
      (i32.const 18)
      (i32.const 5)
      (local.get $A)
@@ -233,10 +233,10 @@
    )
   )
   (local.set $A
-   (call $set_anyref
+   (call $set_externref
     (i32.const 29)
     (i32.const 5)
-    (call $get_anyref
+    (call $get_externref
      (i32.const 28)
      (i32.const 5)
      (local.get $A)
@@ -269,7 +269,7 @@
    (funcref.pop)
   )
   (local.set $A
-   (anyref.pop)
+   (externref.pop)
   )
   (local.set $N
    (nullref.pop)
diff --git a/test/passes/instrument-locals_all-features.wast b/test/passes/instrument-locals_all-features.wast
index ccf64d5a277..b73cda965ec 100644
--- a/test/passes/instrument-locals_all-features.wast
+++ b/test/passes/instrument-locals_all-features.wast
@@ -5,7 +5,7 @@
     (local $z f32)
     (local $w f64)
     (local $F funcref)
-    (local $A anyref)
+    (local $A externref)
     (local $N nullref)
     (local $E exnref)
 
@@ -47,7 +47,7 @@
 
     ;; Pop instructions should not be instrumented
     (local.set $F (funcref.pop))
-    (local.set $A (anyref.pop))
+    (local.set $A (externref.pop))
     (local.set $N (nullref.pop))
     (local.set $E (exnref.pop))
   )
diff --git a/test/passes/merge-locals_all-features.txt b/test/passes/merge-locals_all-features.txt
index c87a952d54e..e4d3256953d 100644
--- a/test/passes/merge-locals_all-features.txt
+++ b/test/passes/merge-locals_all-features.txt
@@ -458,7 +458,7 @@
   )
  )
  (func $subtype-test
-  (local $0 anyref)
+  (local $0 externref)
   (local $1 nullref)
   (local $2 nullref)
   (local.set $0
diff --git a/test/passes/merge-locals_all-features.wast b/test/passes/merge-locals_all-features.wast
index a7f61796a3f..2a0a3d2922d 100644
--- a/test/passes/merge-locals_all-features.wast
+++ b/test/passes/merge-locals_all-features.wast
@@ -376,7 +376,7 @@
   )
  )
  (func $subtype-test
-  (local $0 anyref)
+  (local $0 externref)
   (local $1 nullref)
   (local $2 nullref)
   (local.set $0
diff --git a/test/passes/optimize-instructions_all-features.txt b/test/passes/optimize-instructions_all-features.txt
index d84095b89b7..e04bc4eb42c 100644
--- a/test/passes/optimize-instructions_all-features.txt
+++ b/test/passes/optimize-instructions_all-features.txt
@@ -13,7 +13,7 @@
  (type $i32_i64_f32_f64_=>_none (func (param i32 i64 f32 f64)))
  (type $i32_i64_f64_i32_=>_none (func (param i32 i64 f64 i32)))
  (type $none_=>_f64 (func (result f64)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $none_=>_externref (func (result externref)))
  (memory $0 0)
  (export "load-off-2" (func $load-off-2))
  (func $f (param $i1 i32) (param $i2 i64)
@@ -3334,7 +3334,7 @@
    (unreachable)
   )
  )
- (func $if-arms-subtype (result anyref)
+ (func $if-arms-subtype (result externref)
   (ref.null)
  )
 )
diff --git a/test/passes/optimize-instructions_all-features.wast b/test/passes/optimize-instructions_all-features.wast
index 9694d9b2871..8de7d481998 100644
--- a/test/passes/optimize-instructions_all-features.wast
+++ b/test/passes/optimize-instructions_all-features.wast
@@ -3789,8 +3789,8 @@
     )
   )
   ;; Tests when if arms are subtype of if's type
-  (func $if-arms-subtype (result anyref)
-    (if (result anyref)
+  (func $if-arms-subtype (result externref)
+    (if (result externref)
       (i32.const 0)
       (ref.null)
       (ref.null)
diff --git a/test/passes/simplify-globals_all-features.txt b/test/passes/simplify-globals_all-features.txt
index 9c1663b0a67..dc766683ece 100644
--- a/test/passes/simplify-globals_all-features.txt
+++ b/test/passes/simplify-globals_all-features.txt
@@ -213,9 +213,9 @@
 )
 (module
  (type $none_=>_none (func))
- (import "env" "global-1" (global $g1 anyref))
- (global $g2 anyref (global.get $g1))
- (global $g3 anyref (ref.null))
+ (import "env" "global-1" (global $g1 externref))
+ (global $g2 externref (global.get $g1))
+ (global $g3 externref (ref.null))
  (func $test1
   (drop
    (global.get $g1)
diff --git a/test/passes/simplify-globals_all-features.wast b/test/passes/simplify-globals_all-features.wast
index 8c93d1390c4..3c7c61a9f57 100644
--- a/test/passes/simplify-globals_all-features.wast
+++ b/test/passes/simplify-globals_all-features.wast
@@ -128,9 +128,9 @@
 )
 ;; Reference type tests
 (module
-  (import "env" "global-1" (global $g1 anyref))
-  (global $g2 (mut anyref) (global.get $g1))
-  (global $g3 anyref (ref.null))
+  (import "env" "global-1" (global $g1 externref))
+  (global $g2 (mut externref) (global.get $g1))
+  (global $g3 externref (ref.null))
   (func $test1
     (drop (global.get $g1))
     (drop (global.get $g2))
diff --git a/test/passes/strip-target-features_roundtrip_print-features_all-features.txt b/test/passes/strip-target-features_roundtrip_print-features_all-features.txt
index c8d989c936a..e6ff57ce191 100644
--- a/test/passes/strip-target-features_roundtrip_print-features_all-features.txt
+++ b/test/passes/strip-target-features_roundtrip_print-features_all-features.txt
@@ -9,14 +9,14 @@
 --enable-reference-types
 --enable-multivalue
 (module
- (type $none_=>_v128_anyref (func (result v128 anyref)))
- (func $foo (result v128 anyref)
+ (type $none_=>_v128_externref (func (result v128 externref)))
+ (func $foo (result v128 externref)
   (tuple.make
    (v128.const i32x4 0x00000000 0x00000000 0x00000000 0x00000000)
    (ref.null)
   )
  )
- (func $bar (result v128 anyref)
+ (func $bar (result v128 externref)
   (return_call $foo)
  )
 )
diff --git a/test/passes/strip-target-features_roundtrip_print-features_all-features.wast b/test/passes/strip-target-features_roundtrip_print-features_all-features.wast
index 214289904f6..614804f9df5 100644
--- a/test/passes/strip-target-features_roundtrip_print-features_all-features.wast
+++ b/test/passes/strip-target-features_roundtrip_print-features_all-features.wast
@@ -2,13 +2,13 @@
 ;; even if the target features section is stripped first
 
 (module
-  (func $foo (result v128 anyref )
+  (func $foo (result v128 externref )
     (tuple.make
       (v128.const i32x4 0 0 0 0)
       (ref.null)
     )
   )
-  (func $bar (result v128 anyref)
+  (func $bar (result v128 externref)
     (return_call $foo)
   )
 )
diff --git a/test/passes/translate-to-fuzz_all-features.txt b/test/passes/translate-to-fuzz_all-features.txt
index 9662c118a73..2167983755d 100644
--- a/test/passes/translate-to-fuzz_all-features.txt
+++ b/test/passes/translate-to-fuzz_all-features.txt
@@ -11,7 +11,7 @@
  (type $none_=>_i32 (func (result i32)))
  (type $i64_v128_=>_f32 (func (param i64 v128) (result f32)))
  (type $f32_=>_f64 (func (param f32) (result f64)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $none_=>_externref (func (result externref)))
  (type $f64_=>_nullref (func (param f64) (result nullref)))
  (import "fuzzing-support" "log-i32" (func $log-i32 (param i32)))
  (import "fuzzing-support" "log-i64" (func $log-i64 (param i64)))
@@ -271,12 +271,12 @@
   )
   (local.get $0)
  )
- (func $func_8 (result anyref)
+ (func $func_8 (result externref)
   (local $0 i64)
   (local $1 exnref)
   (local $2 nullref)
   (local $3 i32)
-  (local $4 anyref)
+  (local $4 externref)
   (local $5 nullref)
   (local $6 f32)
   (block
@@ -295,7 +295,7 @@
     )
    )
   )
-  (block $label$0 (result anyref)
+  (block $label$0 (result externref)
    (loop $label$1
     (block
      (if
@@ -389,7 +389,7 @@
           )
           (local.tee $3
            (ref.is_null
-            (loop $label$13 (result anyref)
+            (loop $label$13 (result externref)
              (block
               (if
                (i32.eqz
@@ -407,7 +407,7 @@
               )
              )
              (local.tee $4
-              (loop $label$14 (result anyref)
+              (loop $label$14 (result externref)
                (block
                 (if
                  (i32.eqz
@@ -595,7 +595,7 @@
  (func $func_9 (param $0 f64) (result nullref)
   (local $1 nullref)
   (local $2 f32)
-  (local $3 anyref)
+  (local $3 externref)
   (local $4 exnref)
   (block
    (if
@@ -616,7 +616,7 @@
   (local.get $1)
  )
  (func $func_10 (param $0 f32) (result f64)
-  (local $1 anyref)
+  (local $1 externref)
   (local $2 v128)
   (local $3 i32)
   (local $4 v128)
@@ -627,7 +627,7 @@
   (local $9 nullref)
   (local $10 exnref)
   (local $11 exnref)
-  (local $12 anyref)
+  (local $12 externref)
   (local $13 nullref)
   (local $14 (v128 i32 exnref v128))
   (local $15 i64)
diff --git a/test/reference-types.wast b/test/reference-types.wast
index b5c1f9c41ef..3fc2b5ada91 100644
--- a/test/reference-types.wast
+++ b/test/reference-types.wast
@@ -1,44 +1,44 @@
-;; reftype :: anyref | funcref | exnref | nullref
+;; reftype :: externref | funcref | exnref | nullref
 
-;; t <: anyref for all reftypes t
-;; nullref <: anyref, nullref <: funcref and nullref <: exnref
+;; t <: externref for all reftypes t
+;; nullref <: externref, nullref <: funcref and nullref <: exnref
 
 (module
-  (type $sig_anyref (func (param anyref)))
+  (type $sig_externref (func (param externref)))
   (type $sig_funcref (func (param funcref)))
   (type $sig_exnref (func (param exnref)))
   (type $sig_nullref (func (param nullref)))
 
-  (func $take_anyref (param anyref))
+  (func $take_externref (param externref))
   (func $take_funcref (param funcref))
   (func $take_exnref (param exnref))
   (func $take_nullref (param nullref))
   (func $foo)
 
-  (table funcref (elem $take_anyref $take_funcref $take_exnref $take_nullref))
+  (table funcref (elem $take_externref $take_funcref $take_exnref $take_nullref))
 
-  (import "env" "import_func" (func $import_func (param anyref) (result funcref)))
-  (import "env" "import_global" (global $import_global anyref))
-  (export "export_func" (func $import_func (param anyref) (result funcref)))
+  (import "env" "import_func" (func $import_func (param externref) (result funcref)))
+  (import "env" "import_global" (global $import_global externref))
+  (export "export_func" (func $import_func (param externref) (result funcref)))
   (export "export_global" (global $import_global))
 
   ;; Test subtype relationship in global initializer expressions
-  (global $global_anyref (mut anyref) (ref.null))
+  (global $global_externref (mut externref) (ref.null))
   (global $global_funcref (mut funcref) (ref.null))
   (global $global_exnref (mut exnref) (ref.null))
   (global $global_nullref (mut nullref) (ref.null))
-  (global $global_anyref2 (mut anyref) (ref.func $foo))
+  (global $global_externref2 (mut externref) (ref.func $foo))
   (global $global_funcref2 (mut funcref) (ref.func $foo))
 
-  (func $test (local $local_anyref anyref) (local $local_funcref funcref)
+  (func $test (local $local_externref externref) (local $local_funcref funcref)
         (local $local_exnref exnref) (local $local_nullref nullref)
     ;; Test subtype relationship for local.set & Test types for local.get
-    (local.set $local_anyref (local.get $local_anyref))
-    (local.set $local_anyref (local.get $local_funcref))
-    (local.set $local_anyref (local.get $local_exnref))
-    (local.set $local_anyref (local.get $local_nullref))
-    (local.set $local_anyref (ref.null))
-    (local.set $local_anyref (ref.func $foo))
+    (local.set $local_externref (local.get $local_externref))
+    (local.set $local_externref (local.get $local_funcref))
+    (local.set $local_externref (local.get $local_exnref))
+    (local.set $local_externref (local.get $local_nullref))
+    (local.set $local_externref (ref.null))
+    (local.set $local_externref (ref.func $foo))
     (local.set $local_funcref (local.get $local_funcref))
     (local.set $local_funcref (ref.null))
     (local.set $local_funcref (ref.func $foo))
@@ -48,12 +48,12 @@
     (local.set $local_nullref (ref.null))
 
     ;; Test subtype relationship for global.set & Test types for global.get
-    (global.set $global_anyref (global.get $global_anyref))
-    (global.set $global_anyref (global.get $global_funcref))
-    (global.set $global_anyref (global.get $global_exnref))
-    (global.set $global_anyref (global.get $global_nullref))
-    (global.set $global_anyref (ref.null))
-    (global.set $global_anyref (ref.func $foo))
+    (global.set $global_externref (global.get $global_externref))
+    (global.set $global_externref (global.get $global_funcref))
+    (global.set $global_externref (global.get $global_exnref))
+    (global.set $global_externref (global.get $global_nullref))
+    (global.set $global_externref (ref.null))
+    (global.set $global_externref (ref.func $foo))
     (global.set $global_funcref (global.get $global_funcref))
     (global.set $global_funcref (ref.null))
     (global.set $global_funcref (ref.func $foo))
@@ -63,14 +63,14 @@
     (global.set $global_nullref (ref.null))
 
     ;; Test subtype relationship for function call / call_indirect params
-    (call $take_anyref (local.get $local_anyref))
-    (call $take_anyref (local.get $local_funcref))
-    (call $take_anyref (local.get $local_exnref))
-    (call $take_anyref (ref.null))
-    (call_indirect (type $sig_anyref) (local.get $local_anyref) (i32.const 0))
-    (call_indirect (type $sig_anyref) (local.get $local_funcref) (i32.const 0))
-    (call_indirect (type $sig_anyref) (local.get $local_exnref) (i32.const 0))
-    (call_indirect (type $sig_anyref) (ref.null) (i32.const 0))
+    (call $take_externref (local.get $local_externref))
+    (call $take_externref (local.get $local_funcref))
+    (call $take_externref (local.get $local_exnref))
+    (call $take_externref (ref.null))
+    (call_indirect (type $sig_externref) (local.get $local_externref) (i32.const 0))
+    (call_indirect (type $sig_externref) (local.get $local_funcref) (i32.const 0))
+    (call_indirect (type $sig_externref) (local.get $local_exnref) (i32.const 0))
+    (call_indirect (type $sig_externref) (ref.null) (i32.const 0))
     (call_indirect (type $sig_funcref) (local.get $local_funcref) (i32.const 1))
     (call_indirect (type $sig_funcref) (ref.null) (i32.const 1))
     (call_indirect (type $sig_exnref) (local.get $local_exnref) (i32.const 2))
@@ -80,22 +80,22 @@
 
     ;; Test subtype relationship for block return type
     (drop
-      (block (result anyref)
-        (br_if 0 (local.get $local_anyref) (i32.const 1))
+      (block (result externref)
+        (br_if 0 (local.get $local_externref) (i32.const 1))
       )
     )
     (drop
-      (block (result anyref)
+      (block (result externref)
         (br_if 0 (local.get $local_funcref) (i32.const 1))
       )
     )
     (drop
-      (block (result anyref)
+      (block (result externref)
         (br_if 0 (local.get $local_exnref) (i32.const 1))
       )
     )
     (drop
-      (block (result anyref)
+      (block (result externref)
         (br_if 0 (ref.null) (i32.const 1))
       )
     )
@@ -117,22 +117,22 @@
 
     ;; Test subtype relationship for loop return type
     (drop
-      (loop (result anyref)
-        (local.get $local_anyref)
+      (loop (result externref)
+        (local.get $local_externref)
       )
     )
     (drop
-      (loop (result anyref)
+      (loop (result externref)
         (local.get $local_funcref)
       )
     )
     (drop
-      (loop (result anyref)
+      (loop (result externref)
         (local.get $local_exnref)
       )
     )
     (drop
-      (loop (result anyref)
+      (loop (result externref)
         (ref.null)
       )
     )
@@ -164,14 +164,14 @@
 
     ;; Test subtype relationship for if return type
     (drop
-      (if (result anyref)
+      (if (result externref)
         (i32.const 1)
-        (local.get $local_anyref)
+        (local.get $local_externref)
         (local.get $local_exnref)
       )
     )
     (drop
-      (if (result anyref)
+      (if (result externref)
         (i32.const 1)
         (ref.func $foo)
         (ref.null)
@@ -201,9 +201,9 @@
 
     ;; Test subtype relationship for try return type
     (drop
-      (try (result anyref)
+      (try (result externref)
         (do
-          (local.get $local_anyref)
+          (local.get $local_externref)
         )
         (catch
           (exnref.pop)
@@ -211,7 +211,7 @@
       )
     )
     (drop
-      (try (result anyref)
+      (try (result externref)
         (do
           (ref.func $foo)
         )
@@ -256,28 +256,28 @@
 
     ;; Test subtype relationship for typed select
     (drop
-      (select (result anyref)
-        (local.get $local_anyref)
+      (select (result externref)
+        (local.get $local_externref)
         (ref.func $foo)
         (i32.const 1)
       )
     )
     (drop
-      (select (result anyref)
+      (select (result externref)
         (local.get $local_exnref)
-        (local.get $local_anyref)
+        (local.get $local_externref)
         (i32.const 1)
       )
     )
     (drop
-      (select (result anyref)
-        (local.get $local_anyref)
+      (select (result externref)
+        (local.get $local_externref)
         (ref.null)
         (i32.const 1)
       )
     )
     (drop
-      (select (result anyref)
+      (select (result externref)
         (ref.null)
         (ref.func $foo)
         (i32.const 1)
@@ -313,23 +313,23 @@
     )
 
     ;; ref.is_null takes any reference types
-    (drop (ref.is_null (local.get $local_anyref)))
+    (drop (ref.is_null (local.get $local_externref)))
     (drop (ref.is_null (local.get $local_exnref)))
     (drop (ref.is_null (ref.func $foo)))
     (drop (ref.is_null (ref.null)))
   )
 
   ;; Test subtype relationship in function return type
-  (func $return_anyref (result anyref) (local $local_anyref anyref)
-    (local.get $local_anyref)
+  (func $return_externref (result externref) (local $local_externref externref)
+    (local.get $local_externref)
   )
-  (func $return_anyref2 (result anyref)
+  (func $return_externref2 (result externref)
     (ref.func $foo)
   )
-  (func $return_anyref3 (result anyref) (local $local_exnref exnref)
+  (func $return_externref3 (result externref) (local $local_exnref exnref)
     (local.get $local_exnref)
   )
-  (func $return_anyref4 (result anyref)
+  (func $return_externref4 (result externref)
     (ref.null)
   )
   (func $return_funcref (result funcref)
@@ -349,9 +349,9 @@
   )
 
   ;; Test subtype relationship in returns
-  (func $return_anyref_returns (result anyref) (local $local_anyref anyref)
+  (func $return_externref_returns (result externref) (local $local_externref externref)
         (local $local_exnref exnref)
-    (return (local.get $local_anyref))
+    (return (local.get $local_externref))
     (return (local.get $local_exnref))
     (return (ref.func $foo))
     (return (ref.null))
diff --git a/test/reference-types.wast.from-wast b/test/reference-types.wast.from-wast
index db33afb1707..3916606c028 100644
--- a/test/reference-types.wast.from-wast
+++ b/test/reference-types.wast.from-wast
@@ -1,6 +1,6 @@
 (module
- (type $anyref_=>_none (func (param anyref)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $externref_=>_none (func (param externref)))
+ (type $none_=>_externref (func (result externref)))
  (type $funcref_=>_none (func (param funcref)))
  (type $nullref_=>_none (func (param nullref)))
  (type $exnref_=>_none (func (param exnref)))
@@ -8,20 +8,20 @@
  (type $none_=>_exnref (func (result exnref)))
  (type $none_=>_none (func))
  (type $none_=>_nullref (func (result nullref)))
- (type $anyref_=>_funcref (func (param anyref) (result funcref)))
- (import "env" "import_global" (global $import_global anyref))
- (import "env" "import_func" (func $import_func (param anyref) (result funcref)))
+ (type $externref_=>_funcref (func (param externref) (result funcref)))
+ (import "env" "import_global" (global $import_global externref))
+ (import "env" "import_func" (func $import_func (param externref) (result funcref)))
  (table $0 4 4 funcref)
- (elem (i32.const 0) $take_anyref $take_funcref $take_exnref $take_nullref)
- (global $global_anyref (mut anyref) (ref.null))
+ (elem (i32.const 0) $take_externref $take_funcref $take_exnref $take_nullref)
+ (global $global_externref (mut externref) (ref.null))
  (global $global_funcref (mut funcref) (ref.null))
  (global $global_exnref (mut exnref) (ref.null))
  (global $global_nullref (mut nullref) (ref.null))
- (global $global_anyref2 (mut anyref) (ref.func $foo))
+ (global $global_externref2 (mut externref) (ref.func $foo))
  (global $global_funcref2 (mut funcref) (ref.func $foo))
  (export "export_func" (func $import_func))
  (export "export_global" (global $import_global))
- (func $take_anyref (param $0 anyref)
+ (func $take_externref (param $0 externref)
   (nop)
  )
  (func $take_funcref (param $0 funcref)
@@ -37,26 +37,26 @@
   (nop)
  )
  (func $test
-  (local $local_anyref anyref)
+  (local $local_externref externref)
   (local $local_funcref funcref)
   (local $local_exnref exnref)
   (local $local_nullref nullref)
-  (local.set $local_anyref
-   (local.get $local_anyref)
+  (local.set $local_externref
+   (local.get $local_externref)
   )
-  (local.set $local_anyref
+  (local.set $local_externref
    (local.get $local_funcref)
   )
-  (local.set $local_anyref
+  (local.set $local_externref
    (local.get $local_exnref)
   )
-  (local.set $local_anyref
+  (local.set $local_externref
    (local.get $local_nullref)
   )
-  (local.set $local_anyref
+  (local.set $local_externref
    (ref.null)
   )
-  (local.set $local_anyref
+  (local.set $local_externref
    (ref.func $foo)
   )
   (local.set $local_funcref
@@ -80,22 +80,22 @@
   (local.set $local_nullref
    (ref.null)
   )
-  (global.set $global_anyref
-   (global.get $global_anyref)
+  (global.set $global_externref
+   (global.get $global_externref)
   )
-  (global.set $global_anyref
+  (global.set $global_externref
    (global.get $global_funcref)
   )
-  (global.set $global_anyref
+  (global.set $global_externref
    (global.get $global_exnref)
   )
-  (global.set $global_anyref
+  (global.set $global_externref
    (global.get $global_nullref)
   )
-  (global.set $global_anyref
+  (global.set $global_externref
    (ref.null)
   )
-  (global.set $global_anyref
+  (global.set $global_externref
    (ref.func $foo)
   )
   (global.set $global_funcref
@@ -119,31 +119,31 @@
   (global.set $global_nullref
    (ref.null)
   )
-  (call $take_anyref
-   (local.get $local_anyref)
+  (call $take_externref
+   (local.get $local_externref)
   )
-  (call $take_anyref
+  (call $take_externref
    (local.get $local_funcref)
   )
-  (call $take_anyref
+  (call $take_externref
    (local.get $local_exnref)
   )
-  (call $take_anyref
+  (call $take_externref
    (ref.null)
   )
-  (call_indirect (type $anyref_=>_none)
-   (local.get $local_anyref)
+  (call_indirect (type $externref_=>_none)
+   (local.get $local_externref)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $local_funcref)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $local_exnref)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (ref.null)
    (i32.const 0)
   )
@@ -172,15 +172,15 @@
    (i32.const 3)
   )
   (drop
-   (block $block (result anyref)
+   (block $block (result externref)
     (br_if $block
-     (local.get $local_anyref)
+     (local.get $local_externref)
      (i32.const 1)
     )
    )
   )
   (drop
-   (block $block0 (result anyref)
+   (block $block0 (result externref)
     (br_if $block0
      (local.get $local_funcref)
      (i32.const 1)
@@ -188,7 +188,7 @@
    )
   )
   (drop
-   (block $block1 (result anyref)
+   (block $block1 (result externref)
     (br_if $block1
      (local.get $local_exnref)
      (i32.const 1)
@@ -196,7 +196,7 @@
    )
   )
   (drop
-   (block $block2 (result anyref)
+   (block $block2 (result externref)
     (br_if $block2
      (ref.null)
      (i32.const 1)
@@ -228,22 +228,22 @@
    )
   )
   (drop
-   (loop $loop-in (result anyref)
-    (local.get $local_anyref)
+   (loop $loop-in (result externref)
+    (local.get $local_externref)
    )
   )
   (drop
-   (loop $loop-in6 (result anyref)
+   (loop $loop-in6 (result externref)
     (local.get $local_funcref)
    )
   )
   (drop
-   (loop $loop-in7 (result anyref)
+   (loop $loop-in7 (result externref)
     (local.get $local_exnref)
    )
   )
   (drop
-   (loop $loop-in8 (result anyref)
+   (loop $loop-in8 (result externref)
     (ref.null)
    )
   )
@@ -273,14 +273,14 @@
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
-    (local.get $local_anyref)
+    (local.get $local_externref)
     (local.get $local_exnref)
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
     (ref.func $foo)
     (ref.null)
@@ -308,9 +308,9 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
-     (local.get $local_anyref)
+     (local.get $local_externref)
     )
     (catch
      (exnref.pop)
@@ -318,7 +318,7 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
      (ref.func $foo)
     )
@@ -367,28 +367,28 @@
    )
   )
   (drop
-   (select (result anyref)
-    (local.get $local_anyref)
+   (select (result externref)
+    (local.get $local_externref)
     (ref.func $foo)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $local_exnref)
-    (local.get $local_anyref)
+    (local.get $local_externref)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
-    (local.get $local_anyref)
+   (select (result externref)
+    (local.get $local_externref)
     (ref.null)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (ref.null)
     (ref.func $foo)
     (i32.const 1)
@@ -424,7 +424,7 @@
   )
   (drop
    (ref.is_null
-    (local.get $local_anyref)
+    (local.get $local_externref)
    )
   )
   (drop
@@ -443,18 +443,18 @@
    )
   )
  )
- (func $return_anyref (result anyref)
-  (local $local_anyref anyref)
-  (local.get $local_anyref)
+ (func $return_externref (result externref)
+  (local $local_externref externref)
+  (local.get $local_externref)
  )
- (func $return_anyref2 (result anyref)
+ (func $return_externref2 (result externref)
   (ref.func $foo)
  )
- (func $return_anyref3 (result anyref)
+ (func $return_externref3 (result externref)
   (local $local_exnref exnref)
   (local.get $local_exnref)
  )
- (func $return_anyref4 (result anyref)
+ (func $return_externref4 (result externref)
   (ref.null)
  )
  (func $return_funcref (result funcref)
@@ -474,11 +474,11 @@
   (local $local_nullref nullref)
   (local.get $local_nullref)
  )
- (func $return_anyref_returns (result anyref)
-  (local $local_anyref anyref)
+ (func $return_externref_returns (result externref)
+  (local $local_externref externref)
   (local $local_exnref exnref)
   (return
-   (local.get $local_anyref)
+   (local.get $local_externref)
   )
   (return
    (local.get $local_exnref)
diff --git a/test/reference-types.wast.fromBinary b/test/reference-types.wast.fromBinary
index 82ade2c15c6..ae36b920998 100644
--- a/test/reference-types.wast.fromBinary
+++ b/test/reference-types.wast.fromBinary
@@ -1,6 +1,6 @@
 (module
- (type $anyref_=>_none (func (param anyref)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $externref_=>_none (func (param externref)))
+ (type $none_=>_externref (func (result externref)))
  (type $funcref_=>_none (func (param funcref)))
  (type $nullref_=>_none (func (param nullref)))
  (type $exnref_=>_none (func (param exnref)))
@@ -8,20 +8,20 @@
  (type $none_=>_exnref (func (result exnref)))
  (type $none_=>_none (func))
  (type $none_=>_nullref (func (result nullref)))
- (type $anyref_=>_funcref (func (param anyref) (result funcref)))
- (import "env" "import_global" (global $gimport$1 anyref))
- (import "env" "import_func" (func $import_func (param anyref) (result funcref)))
+ (type $externref_=>_funcref (func (param externref) (result funcref)))
+ (import "env" "import_global" (global $gimport$1 externref))
+ (import "env" "import_func" (func $import_func (param externref) (result funcref)))
  (table $0 4 4 funcref)
- (elem (i32.const 0) $take_anyref $take_funcref $take_exnref $take_nullref)
- (global $global$0 (mut anyref) (ref.null))
+ (elem (i32.const 0) $take_externref $take_funcref $take_exnref $take_nullref)
+ (global $global$0 (mut externref) (ref.null))
  (global $global$1 (mut funcref) (ref.null))
  (global $global$2 (mut exnref) (ref.null))
  (global $global$3 (mut nullref) (ref.null))
- (global $global$4 (mut anyref) (ref.func $foo))
+ (global $global$4 (mut externref) (ref.func $foo))
  (global $global$5 (mut funcref) (ref.func $foo))
  (export "export_func" (func $import_func))
  (export "export_global" (global $gimport$1))
- (func $take_anyref (param $0 anyref)
+ (func $take_externref (param $0 externref)
   (nop)
  )
  (func $take_funcref (param $0 funcref)
@@ -38,7 +38,7 @@
  )
  (func $test
   (local $0 funcref)
-  (local $1 anyref)
+  (local $1 externref)
   (local $2 nullref)
   (local $3 exnref)
   (local.set $1
@@ -119,31 +119,31 @@
   (global.set $global$3
    (ref.null)
   )
-  (call $take_anyref
+  (call $take_externref
    (local.get $1)
   )
-  (call $take_anyref
+  (call $take_externref
    (local.get $0)
   )
-  (call $take_anyref
+  (call $take_externref
    (local.get $3)
   )
-  (call $take_anyref
+  (call $take_externref
    (ref.null)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $1)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $0)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $3)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (ref.null)
    (i32.const 0)
   )
@@ -172,7 +172,7 @@
    (i32.const 3)
   )
   (drop
-   (block $label$1 (result anyref)
+   (block $label$1 (result externref)
     (br_if $label$1
      (local.get $1)
      (i32.const 1)
@@ -180,7 +180,7 @@
    )
   )
   (drop
-   (block $label$2 (result anyref)
+   (block $label$2 (result externref)
     (br_if $label$2
      (local.get $0)
      (i32.const 1)
@@ -188,7 +188,7 @@
    )
   )
   (drop
-   (block $label$3 (result anyref)
+   (block $label$3 (result externref)
     (br_if $label$3
      (local.get $3)
      (i32.const 1)
@@ -196,7 +196,7 @@
    )
   )
   (drop
-   (block $label$4 (result anyref)
+   (block $label$4 (result externref)
     (br_if $label$4
      (ref.null)
      (i32.const 1)
@@ -228,22 +228,22 @@
    )
   )
   (drop
-   (loop $label$8 (result anyref)
+   (loop $label$8 (result externref)
     (local.get $1)
    )
   )
   (drop
-   (loop $label$9 (result anyref)
+   (loop $label$9 (result externref)
     (local.get $0)
    )
   )
   (drop
-   (loop $label$10 (result anyref)
+   (loop $label$10 (result externref)
     (local.get $3)
    )
   )
   (drop
-   (loop $label$11 (result anyref)
+   (loop $label$11 (result externref)
     (ref.null)
    )
   )
@@ -273,14 +273,14 @@
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
     (local.get $1)
     (local.get $3)
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
     (ref.func $foo)
     (ref.null)
@@ -308,7 +308,7 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
      (local.get $1)
     )
@@ -318,7 +318,7 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
      (ref.func $foo)
     )
@@ -367,28 +367,28 @@
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $1)
     (ref.func $foo)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $3)
     (local.get $1)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $1)
     (ref.null)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (ref.null)
     (ref.func $foo)
     (i32.const 1)
@@ -443,18 +443,18 @@
    )
   )
  )
- (func $return_anyref (result anyref)
-  (local $0 anyref)
+ (func $return_externref (result externref)
+  (local $0 externref)
   (local.get $0)
  )
- (func $return_anyref2 (result anyref)
+ (func $return_externref2 (result externref)
   (ref.func $foo)
  )
- (func $return_anyref3 (result anyref)
+ (func $return_externref3 (result externref)
   (local $0 exnref)
   (local.get $0)
  )
- (func $return_anyref4 (result anyref)
+ (func $return_externref4 (result externref)
   (ref.null)
  )
  (func $return_funcref (result funcref)
@@ -474,8 +474,8 @@
   (local $0 nullref)
   (local.get $0)
  )
- (func $return_anyref_returns (result anyref)
-  (local $0 anyref)
+ (func $return_externref_returns (result externref)
+  (local $0 externref)
   (local $1 exnref)
   (return
    (local.get $0)
diff --git a/test/reference-types.wast.fromBinary.noDebugInfo b/test/reference-types.wast.fromBinary.noDebugInfo
index a89f3a3a3c4..9e8dac3a354 100644
--- a/test/reference-types.wast.fromBinary.noDebugInfo
+++ b/test/reference-types.wast.fromBinary.noDebugInfo
@@ -1,6 +1,6 @@
 (module
- (type $anyref_=>_none (func (param anyref)))
- (type $none_=>_anyref (func (result anyref)))
+ (type $externref_=>_none (func (param externref)))
+ (type $none_=>_externref (func (result externref)))
  (type $funcref_=>_none (func (param funcref)))
  (type $nullref_=>_none (func (param nullref)))
  (type $exnref_=>_none (func (param exnref)))
@@ -8,20 +8,20 @@
  (type $none_=>_exnref (func (result exnref)))
  (type $none_=>_none (func))
  (type $none_=>_nullref (func (result nullref)))
- (type $anyref_=>_funcref (func (param anyref) (result funcref)))
- (import "env" "import_global" (global $gimport$1 anyref))
- (import "env" "import_func" (func $fimport$0 (param anyref) (result funcref)))
+ (type $externref_=>_funcref (func (param externref) (result funcref)))
+ (import "env" "import_global" (global $gimport$1 externref))
+ (import "env" "import_func" (func $fimport$0 (param externref) (result funcref)))
  (table $0 4 4 funcref)
  (elem (i32.const 0) $0 $1 $2 $3)
- (global $global$0 (mut anyref) (ref.null))
+ (global $global$0 (mut externref) (ref.null))
  (global $global$1 (mut funcref) (ref.null))
  (global $global$2 (mut exnref) (ref.null))
  (global $global$3 (mut nullref) (ref.null))
- (global $global$4 (mut anyref) (ref.func $4))
+ (global $global$4 (mut externref) (ref.func $4))
  (global $global$5 (mut funcref) (ref.func $4))
  (export "export_func" (func $fimport$0))
  (export "export_global" (global $gimport$1))
- (func $0 (param $0 anyref)
+ (func $0 (param $0 externref)
   (nop)
  )
  (func $1 (param $0 funcref)
@@ -38,7 +38,7 @@
  )
  (func $5
   (local $0 funcref)
-  (local $1 anyref)
+  (local $1 externref)
   (local $2 nullref)
   (local $3 exnref)
   (local.set $1
@@ -131,19 +131,19 @@
   (call $0
    (ref.null)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $1)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $0)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (local.get $3)
    (i32.const 0)
   )
-  (call_indirect (type $anyref_=>_none)
+  (call_indirect (type $externref_=>_none)
    (ref.null)
    (i32.const 0)
   )
@@ -172,7 +172,7 @@
    (i32.const 3)
   )
   (drop
-   (block $label$1 (result anyref)
+   (block $label$1 (result externref)
     (br_if $label$1
      (local.get $1)
      (i32.const 1)
@@ -180,7 +180,7 @@
    )
   )
   (drop
-   (block $label$2 (result anyref)
+   (block $label$2 (result externref)
     (br_if $label$2
      (local.get $0)
      (i32.const 1)
@@ -188,7 +188,7 @@
    )
   )
   (drop
-   (block $label$3 (result anyref)
+   (block $label$3 (result externref)
     (br_if $label$3
      (local.get $3)
      (i32.const 1)
@@ -196,7 +196,7 @@
    )
   )
   (drop
-   (block $label$4 (result anyref)
+   (block $label$4 (result externref)
     (br_if $label$4
      (ref.null)
      (i32.const 1)
@@ -228,22 +228,22 @@
    )
   )
   (drop
-   (loop $label$8 (result anyref)
+   (loop $label$8 (result externref)
     (local.get $1)
    )
   )
   (drop
-   (loop $label$9 (result anyref)
+   (loop $label$9 (result externref)
     (local.get $0)
    )
   )
   (drop
-   (loop $label$10 (result anyref)
+   (loop $label$10 (result externref)
     (local.get $3)
    )
   )
   (drop
-   (loop $label$11 (result anyref)
+   (loop $label$11 (result externref)
     (ref.null)
    )
   )
@@ -273,14 +273,14 @@
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
     (local.get $1)
     (local.get $3)
    )
   )
   (drop
-   (if (result anyref)
+   (if (result externref)
     (i32.const 1)
     (ref.func $4)
     (ref.null)
@@ -308,7 +308,7 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
      (local.get $1)
     )
@@ -318,7 +318,7 @@
    )
   )
   (drop
-   (try (result anyref)
+   (try (result externref)
     (do
      (ref.func $4)
     )
@@ -367,28 +367,28 @@
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $1)
     (ref.func $4)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $3)
     (local.get $1)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (local.get $1)
     (ref.null)
     (i32.const 1)
    )
   )
   (drop
-   (select (result anyref)
+   (select (result externref)
     (ref.null)
     (ref.func $4)
     (i32.const 1)
@@ -443,18 +443,18 @@
    )
   )
  )
- (func $6 (result anyref)
-  (local $0 anyref)
+ (func $6 (result externref)
+  (local $0 externref)
   (local.get $0)
  )
- (func $7 (result anyref)
+ (func $7 (result externref)
   (ref.func $4)
  )
- (func $8 (result anyref)
+ (func $8 (result externref)
   (local $0 exnref)
   (local.get $0)
  )
- (func $9 (result anyref)
+ (func $9 (result externref)
   (ref.null)
  )
  (func $10 (result funcref)
@@ -474,8 +474,8 @@
   (local $0 nullref)
   (local.get $0)
  )
- (func $15 (result anyref)
-  (local $0 anyref)
+ (func $15 (result externref)
+  (local $0 externref)
   (local $1 exnref)
   (return
    (local.get $0)
diff --git a/test/spec/old_select.wast b/test/spec/old_select.wast
index bb9c7c5878f..e1dd40654d3 100644
--- a/test/spec/old_select.wast
+++ b/test/spec/old_select.wast
@@ -29,8 +29,8 @@
   (func (export "select-funcref") (param funcref funcref i32) (result funcref)
     (select (result funcref) (local.get 0) (local.get 1) (local.get 2))
   )
-  (func (export "select-anyref") (param anyref anyref i32) (result anyref)
-    (select (result anyref) (local.get 0) (local.get 1) (local.get 2))
+  (func (export "select-externref") (param externref externref i32) (result externref)
+    (select (result externref) (local.get 0) (local.get 1) (local.get 2))
   )
 
   ;; Check that both sides of the select are evaluated
@@ -39,18 +39,18 @@
   (func (export "select_trap_r") (param $cond i32) (result i32)
    (select (i32.const 0) (unreachable) (local.get $cond)))
 
-  (func (export "join-nullref") (param i32) (result anyref)
-    (select (result anyref) (ref.null) (ref.null) (local.get 0))
+  (func (export "join-nullref") (param i32) (result externref)
+    (select (result externref) (ref.null) (ref.null) (local.get 0))
   )
-  (func (export "join-funcref") (param i32) (result anyref)
-    (select (result anyref)
+  (func (export "join-funcref") (param i32) (result externref)
+    (select (result externref)
       (ref.func $dummy)
       (ref.null)
       (local.get 0)
     )
   )
-  (func (export "join-anyref") (param i32) (param anyref) (result anyref)
-    (select (result anyref)
+  (func (export "join-externref") (param i32) (param externref) (result externref)
+    (select (result externref)
       (ref.func $dummy)
       (local.get 1)
       (local.get 0)
@@ -92,13 +92,13 @@
 (assert_return (invoke "select-f64-t" (f64.const 1) (f64.const 2) (i32.const 1)) (f64.const 1))
 (assert_return (invoke "select-nullref" (ref.null) (ref.null) (i32.const 1)) (ref.null))
 (assert_return (invoke "select-funcref" (ref.func "dummy") (ref.null) (i32.const 1)) (ref.func "dummy"))
-(assert_return (invoke "select-anyref" (ref.null) (ref.func "dummy") (i32.const 1)) (ref.null))
+(assert_return (invoke "select-externref" (ref.null) (ref.func "dummy") (i32.const 1)) (ref.null))
 
 (assert_return (invoke "select-i32-t" (i32.const 1) (i32.const 2) (i32.const 0)) (i32.const 2))
 (assert_return (invoke "select-i32-t" (i32.const 2) (i32.const 1) (i32.const 0)) (i32.const 1))
 (assert_return (invoke "select-i64-t" (i64.const 2) (i64.const 1) (i32.const -1)) (i64.const 2))
 (assert_return (invoke "select-i64-t" (i64.const 2) (i64.const 1) (i32.const 0xf0f0f0f0)) (i64.const 2))
-(assert_return (invoke "select-anyref" (ref.null) (ref.func "dummy") (i32.const 0)) (ref.func "dummy"))
+(assert_return (invoke "select-externref" (ref.null) (ref.func "dummy") (i32.const 0)) (ref.func "dummy"))
 
 (assert_return (invoke "select-f32-t" (f32.const nan) (f32.const 1) (i32.const 1)) (f32.const nan))
 (assert_return (invoke "select-f32-t" (f32.const nan:0x20304) (f32.const 1) (i32.const 1)) (f32.const nan:0x20304))
@@ -124,8 +124,8 @@
 (assert_return_func (invoke "join-funcref" (i32.const 1)))
 (assert_return (invoke "join-funcref" (i32.const 0)) (ref.null))
 
-(assert_return_func (invoke "join-anyref" (i32.const 1) (ref.null)))
-(assert_return (invoke "join-anyref" (i32.const 0) (ref.null)) (ref.null))
+(assert_return_func (invoke "join-externref" (i32.const 1) (ref.null)))
+(assert_return (invoke "join-externref" (i32.const 0) (ref.null)) (ref.null))
 
 (assert_trap (invoke "select_trap_l" (i32.const 1)) "unreachable executed")
 (assert_trap (invoke "select_trap_l" (i32.const 0)) "unreachable executed")
diff --git a/test/spec/ref_func.wast b/test/spec/ref_func.wast
index 0f0ecf6a30b..79bf584befb 100644
--- a/test/spec/ref_func.wast
+++ b/test/spec/ref_func.wast
@@ -5,8 +5,8 @@
   (func $f (import "M" "f") (param i32) (result i32))
   (func $g (param $x i32) (result i32) (i32.add (local.get $x) (i32.const 1)))
 
-  (global anyref (ref.func $f))
-  (global anyref (ref.func $g))
+  (global externref (ref.func $f))
+  (global externref (ref.func $g))
   (global funcref (ref.func $f))
   (global funcref (ref.func $g))
   (global $v (mut funcref) (ref.func $f))
diff --git a/test/spec/ref_is_null.wast b/test/spec/ref_is_null.wast
index dbf4651496d..e44fcf496d8 100644
--- a/test/spec/ref_is_null.wast
+++ b/test/spec/ref_is_null.wast
@@ -2,7 +2,7 @@
   (func $f1 (export "nullref") (param $x nullref) (result i32)
     (ref.is_null (local.get $x))
   )
-  (func $f2 (export "anyref") (param $x anyref) (result i32)
+  (func $f2 (export "externref") (param $x externref) (result i32)
     (ref.is_null (local.get $x))
   )
   (func $f3 (export "funcref") (param $x funcref) (result i32)
@@ -11,5 +11,5 @@
 )
 
 (assert_return (invoke "nullref" (ref.null)) (i32.const 1))
-(assert_return (invoke "anyref" (ref.null)) (i32.const 1))
+(assert_return (invoke "externref" (ref.null)) (i32.const 1))
 (assert_return (invoke "funcref" (ref.null)) (i32.const 1))
diff --git a/test/spec/ref_null.wast b/test/spec/ref_null.wast
index 96cac314adc..93e6acbd22e 100644
--- a/test/spec/ref_null.wast
+++ b/test/spec/ref_null.wast
@@ -1,13 +1,13 @@
 (module
-  (func (export "anyref") (result anyref) (ref.null))
+  (func (export "externref") (result externref) (ref.null))
   (func (export "funcref") (result funcref) (ref.null))
   (func (export "nullref") (result nullref) (ref.null))
 
-  (global anyref (ref.null))
+  (global externref (ref.null))
   (global funcref (ref.null))
   (global nullref (ref.null))
 )
 
-(assert_return (invoke "anyref") (ref.null))
+(assert_return (invoke "externref") (ref.null))
 (assert_return (invoke "funcref") (ref.null))
 (assert_return (invoke "nullref") (ref.null))
diff --git a/test/unit/test_features.py b/test/unit/test_features.py
index 4a79a6dd561..3b30595d6a9 100644
--- a/test/unit/test_features.py
+++ b/test/unit/test_features.py
@@ -160,14 +160,14 @@ def test_tail_call_indirect(self):
         '''
         self.check_tail_call(module, 'return_call_indirect requires tail calls to be enabled')
 
-    def test_reference_types_anyref(self):
+    def test_reference_types_externref(self):
         module = '''
         (module
-         (import "env" "test1" (func $test1 (param anyref) (result anyref)))
-         (import "env" "test2" (global $test2 anyref))
-         (export "test1" (func $test1 (param anyref) (result anyref)))
+         (import "env" "test1" (func $test1 (param externref) (result externref)))
+         (import "env" "test2" (global $test2 externref))
+         (export "test1" (func $test1 (param externref) (result externref)))
          (export "test2" (global $test2))
-         (func $anyref_test (param $0 anyref) (result anyref)
+         (func $externref_test (param $0 externref) (result externref)
           (return
            (call $test1
             (local.get $0)
@@ -298,7 +298,7 @@ def test_reference_types(self):
         filename = 'reference_types_target_feature.wasm'
         self.roundtrip(filename)
         self.check_features(filename, ['reference-types'])
-        self.assertIn('anyref', self.disassemble(filename))
+        self.assertIn('externref', self.disassemble(filename))
 
     def test_exception_handling(self):
         filename = 'exception_handling_target_feature.wasm'