diff --git a/src/node.cc b/src/node.cc
index 0472e55a5a2e10..693457d3ed0aae 100644
--- a/src/node.cc
+++ b/src/node.cc
@@ -4439,6 +4439,11 @@ void FreeEnvironment(Environment* env) {
 }
 
 
+MultiIsolatePlatform* GetMainThreadMultiIsolatePlatform() {
+  return v8_platform.Platform();
+}
+
+
 MultiIsolatePlatform* CreatePlatform(
     int thread_pool_size,
     v8::TracingController* tracing_controller) {
diff --git a/src/node.h b/src/node.h
index ab5d1c120fa007..5a491c1abf5457 100644
--- a/src/node.h
+++ b/src/node.h
@@ -251,6 +251,11 @@ NODE_EXTERN Environment* CreateEnvironment(IsolateData* isolate_data,
 NODE_EXTERN void LoadEnvironment(Environment* env);
 NODE_EXTERN void FreeEnvironment(Environment* env);
 
+// This returns the MultiIsolatePlatform used in the main thread of Node.js.
+// If NODE_USE_V8_PLATFORM haven't been defined when Node.js was built,
+// it returns nullptr.
+NODE_EXTERN MultiIsolatePlatform* GetMainThreadMultiIsolatePlatform();
+
 NODE_EXTERN MultiIsolatePlatform* CreatePlatform(
     int thread_pool_size,
     v8::TracingController* tracing_controller);