diff --git a/src/main/java/com/google/devtools/build/lib/buildtool/PostAnalysisQueryProcessor.java b/src/main/java/com/google/devtools/build/lib/buildtool/PostAnalysisQueryProcessor.java
index 40fcd67d9c5b40..2d3dff5ff9cb66 100644
--- a/src/main/java/com/google/devtools/build/lib/buildtool/PostAnalysisQueryProcessor.java
+++ b/src/main/java/com/google/devtools/build/lib/buildtool/PostAnalysisQueryProcessor.java
@@ -18,6 +18,7 @@
 import com.google.devtools.build.lib.buildtool.BuildTool.ExitException;
 import com.google.devtools.build.lib.cmdline.TargetPattern;
 import com.google.devtools.build.lib.events.Event;
+import com.google.devtools.build.lib.packages.semantics.BuildLanguageOptions;
 import com.google.devtools.build.lib.query2.NamedThreadSafeOutputFormatterCallback;
 import com.google.devtools.build.lib.query2.PostAnalysisQueryEnvironment;
 import com.google.devtools.build.lib.query2.PostAnalysisQueryEnvironment.TopLevelConfigurations;
@@ -160,7 +161,10 @@ private void doPostAnalysisQuery(
             queryRuntimeHelper.getOutputStreamForQueryOutput(),
             env.getSkyframeExecutor(),
             runtime.getRuleClassProvider(),
-            env.getPackageManager());
+            env.getPackageManager(),
+            env.getSkyframeExecutor()
+                .getEffectiveStarlarkSemantics(
+                    env.getOptions().getOptions(BuildLanguageOptions.class)));
     String outputFormat = postAnalysisQueryEnvironment.getOutputFormat();
     NamedThreadSafeOutputFormatterCallback<T> callback =
         NamedThreadSafeOutputFormatterCallback.selectCallback(outputFormat, callbacks);
diff --git a/src/main/java/com/google/devtools/build/lib/query2/PostAnalysisQueryEnvironment.java b/src/main/java/com/google/devtools/build/lib/query2/PostAnalysisQueryEnvironment.java
index 600fbcf6971cc7..1926d885990104 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/PostAnalysisQueryEnvironment.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/PostAnalysisQueryEnvironment.java
@@ -89,6 +89,7 @@
 import java.util.function.Supplier;
 import java.util.stream.Collectors;
 import javax.annotation.Nullable;
+import net.starlark.java.eval.StarlarkSemantics;
 
 /**
  * {@link QueryEnvironment} that runs queries based on results from the analysis phase.
@@ -136,7 +137,8 @@ public PostAnalysisQueryEnvironment(
           OutputStream outputStream,
           SkyframeExecutor skyframeExecutor,
           RuleClassProvider ruleClassProvider,
-          PackageManager packageManager)
+          PackageManager packageManager,
+          StarlarkSemantics starlarkSemantics)
           throws QueryException, InterruptedException;
 
   public abstract String getOutputFormat();
diff --git a/src/main/java/com/google/devtools/build/lib/query2/aquery/ActionGraphQueryEnvironment.java b/src/main/java/com/google/devtools/build/lib/query2/aquery/ActionGraphQueryEnvironment.java
index 237499a8e271d5..33dda8c7187466 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/aquery/ActionGraphQueryEnvironment.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/aquery/ActionGraphQueryEnvironment.java
@@ -55,6 +55,7 @@
 import java.util.Set;
 import java.util.function.Supplier;
 import javax.annotation.Nullable;
+import net.starlark.java.eval.StarlarkSemantics;
 
 /**
  * {@link QueryEnvironment} that is specialized for running action graph queries over the configured
@@ -138,7 +139,8 @@ public ConfiguredTargetValueAccessor getAccessor() {
           OutputStream out,
           SkyframeExecutor skyframeExecutor,
           RuleClassProvider ruleClassProvider,
-          PackageManager packageManager) {
+          PackageManager packageManager,
+          StarlarkSemantics starlarkSemantics) {
     return ImmutableList.of(
         new ActionGraphProtoOutputFormatterCallback(
             eventHandler,
diff --git a/src/main/java/com/google/devtools/build/lib/query2/cquery/ConfiguredTargetQueryEnvironment.java b/src/main/java/com/google/devtools/build/lib/query2/cquery/ConfiguredTargetQueryEnvironment.java
index 7d920381b81859..fbbb8227ce1be7 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/cquery/ConfiguredTargetQueryEnvironment.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/cquery/ConfiguredTargetQueryEnvironment.java
@@ -64,6 +64,7 @@
 import java.util.function.Function;
 import java.util.function.Supplier;
 import javax.annotation.Nullable;
+import net.starlark.java.eval.StarlarkSemantics;
 
 /**
  * {@link QueryEnvironment} that runs queries over the configured target (analysis) graph.
@@ -193,7 +194,8 @@ private static ImmutableMap<String, BuildConfigurationValue> getTransitiveConfig
           OutputStream out,
           SkyframeExecutor skyframeExecutor,
           RuleClassProvider ruleClassProvider,
-          PackageManager packageManager)
+          PackageManager packageManager,
+          StarlarkSemantics starlarkSemantics)
           throws QueryException, InterruptedException {
     AspectResolver aspectResolver =
         cqueryOptions.aspectDeps.createResolver(packageManager, eventHandler);
@@ -269,7 +271,7 @@ private static ImmutableMap<String, BuildConfigurationValue> getTransitiveConfig
             kct -> getFwdDeps(ImmutableList.of(kct)),
             getMainRepoMapping()),
         new StarlarkOutputFormatterCallback(
-            eventHandler, cqueryOptions, out, skyframeExecutor, accessor),
+            eventHandler, cqueryOptions, out, skyframeExecutor, accessor, starlarkSemantics),
         new FilesOutputFormatterCallback(
             eventHandler, cqueryOptions, out, skyframeExecutor, accessor, topLevelArtifactContext));
   }
diff --git a/src/main/java/com/google/devtools/build/lib/query2/cquery/StarlarkOutputFormatterCallback.java b/src/main/java/com/google/devtools/build/lib/query2/cquery/StarlarkOutputFormatterCallback.java
index 752b27fca6a242..a4ecf8707b5263 100644
--- a/src/main/java/com/google/devtools/build/lib/query2/cquery/StarlarkOutputFormatterCallback.java
+++ b/src/main/java/com/google/devtools/build/lib/query2/cquery/StarlarkOutputFormatterCallback.java
@@ -131,15 +131,18 @@ public Object providers(ConfiguredTarget target) {
 
   // Starlark function with single required parameter "target", a ConfiguredTarget query result.
   private final StarlarkFunction formatFn;
+  private final StarlarkSemantics starlarkSemantics;
 
   StarlarkOutputFormatterCallback(
       ExtendedEventHandler eventHandler,
       CqueryOptions options,
       OutputStream out,
       SkyframeExecutor skyframeExecutor,
-      TargetAccessor<ConfiguredTarget> accessor)
+      TargetAccessor<ConfiguredTarget> accessor,
+      StarlarkSemantics starlarkSemantics)
       throws QueryException, InterruptedException {
-    super(eventHandler, options, out, skyframeExecutor, accessor, /*uniquifyResults=*/ false);
+    super(eventHandler, options, out, skyframeExecutor, accessor, /* uniquifyResults= */ false);
+    this.starlarkSemantics = starlarkSemantics;
 
     ParserInput input = null;
     String exceptionMessagePrefix;
@@ -182,11 +185,11 @@ public Object providers(ConfiguredTarget target) {
     }
     try (Mutability mu = Mutability.create("formatter")) {
       ImmutableMap.Builder<String, Object> env = ImmutableMap.builder();
-      Starlark.addMethods(env, new CqueryDialectGlobals(), StarlarkSemantics.DEFAULT);
+      Starlark.addMethods(env, new CqueryDialectGlobals(), starlarkSemantics);
       env.putAll(StarlarkGlobalsImpl.INSTANCE.getUtilToplevelsForCquery());
-      Module module = Module.withPredeclared(StarlarkSemantics.DEFAULT, env.buildOrThrow());
+      Module module = Module.withPredeclared(starlarkSemantics, env.buildOrThrow());
 
-      StarlarkThread thread = new StarlarkThread(mu, StarlarkSemantics.DEFAULT);
+      StarlarkThread thread = new StarlarkThread(mu, starlarkSemantics);
       Starlark.execFile(input, FileOptions.DEFAULT, module, thread);
       Object formatFn = module.getGlobal("format");
       if (formatFn == null) {
@@ -228,7 +231,7 @@ public void processOutput(Iterable<ConfiguredTarget> partialResult) throws Inter
     for (ConfiguredTarget target : partialResult) {
       try {
         StarlarkThread thread =
-            new StarlarkThread(Mutability.create("cquery evaluation"), StarlarkSemantics.DEFAULT);
+            new StarlarkThread(Mutability.create("cquery evaluation"), starlarkSemantics);
         thread.setMaxExecutionSteps(500_000L);
 
         // Invoke formatFn with `target` argument.
diff --git a/src/test/shell/integration/configured_query_test.sh b/src/test/shell/integration/configured_query_test.sh
index b853bd67912a17..c4607a7ad728de 100755
--- a/src/test/shell/integration/configured_query_test.sh
+++ b/src/test/shell/integration/configured_query_test.sh
@@ -893,8 +893,17 @@ EOF
     --starlark:expr="str(target.label) + '%foo'" > output \
     2>"$TEST_log" || fail "Expected success"
 
-  assert_contains "//$pkg:pylib%foo" output
-  assert_contains "//$pkg:pylibtwo%foo" output
+  assert_contains "^@//$pkg:pylib%foo$" output
+  assert_contains "^@//$pkg:pylibtwo%foo$" output
+
+  bazel cquery "//$pkg:all" --output=starlark \
+    --noincompatible_unambiguous_label_stringification \
+    --starlark:expr="str(target.label) + '%foo'" > output \
+    2>"$TEST_log" || fail "Expected success"
+
+  # Verify use of the effective rather than default Starlark semantics.
+  assert_contains "^//$pkg:pylib%foo$" output
+  assert_contains "^//$pkg:pylibtwo%foo$" output
 
   # Test that the default for --starlark:expr str(target.label)
   bazel cquery "//$pkg:all" --output=starlark >output \