diff --git a/src/async_wrap.cc b/src/async_wrap.cc
index b1212e97704ef0..fe4dcbdffccd9b 100644
--- a/src/async_wrap.cc
+++ b/src/async_wrap.cc
@@ -351,7 +351,7 @@ static void PromiseHook(PromiseHookType type, Local<Promise> promise,
     if (env->execution_async_id() == wrap->get_async_id()) {
       // This condition might not be true if async_hooks was enabled during
       // the promise callback execution.
-      // Popping it off the stack can be skipped in that case, because is is
+      // Popping it off the stack can be skipped in that case, because it is
       // known that it would correspond to exactly one call with
       // PromiseHookType::kBefore that was not witnessed by the PromiseHook.
       env->async_hooks()->pop_async_id(wrap->get_async_id());
diff --git a/src/inspector_agent.h b/src/inspector_agent.h
index 29b9546b514aea..3890c87539dca2 100644
--- a/src/inspector_agent.h
+++ b/src/inspector_agent.h
@@ -83,7 +83,7 @@ class Agent {
     return io_.get();
   }
 
-  // Can only be called from the the main thread.
+  // Can only be called from the main thread.
   bool StartIoThread(bool wait_for_connect);
 
   // Calls StartIoThread() from off the main thread.
diff --git a/src/node_api.h b/src/node_api.h
index 627e56118011e6..d2a0886d5a058c 100644
--- a/src/node_api.h
+++ b/src/node_api.h
@@ -179,7 +179,7 @@ NAPI_EXTERN napi_status napi_create_range_error(napi_env env,
                                                 napi_value msg,
                                                 napi_value* result);
 
-// Methods to get the the native napi_value from Primitive type
+// Methods to get the native napi_value from Primitive type
 NAPI_EXTERN napi_status napi_typeof(napi_env env,
                                     napi_value value,
                                     napi_valuetype* result);
diff --git a/src/node_main.cc b/src/node_main.cc
index 2a511b92996e86..7ab612d53e500a 100644
--- a/src/node_main.cc
+++ b/src/node_main.cc
@@ -34,7 +34,7 @@ int wmain(int argc, wchar_t *wargv[]) {
     exit(ERROR_EXE_MACHINE_TYPE_MISMATCH);
   }
 
-  // Convert argv to to UTF8
+  // Convert argv to UTF8
   char** argv = new char*[argc + 1];
   for (int i = 0; i < argc; i++) {
     // Compute the size of the required buffer