diff --git a/clang/lib/Format/FormatToken.h b/clang/lib/Format/FormatToken.h
--- a/clang/lib/Format/FormatToken.h
+++ b/clang/lib/Format/FormatToken.h
@@ -934,8 +934,8 @@
     // already initialized.
     JsExtraKeywords = std::unordered_set<IdentifierInfo *>(
         {kw_as, kw_async, kw_await, kw_declare, kw_finally, kw_from,
-         kw_function, kw_get, kw_import, kw_is, kw_let, kw_module, kw_readonly,
-         kw_set, kw_type, kw_typeof, kw_var, kw_yield,
+         kw_function, kw_get, kw_import, kw_is, kw_let, kw_module, kw_override,
+         kw_readonly, kw_set, kw_type, kw_typeof, kw_var, kw_yield,
          // Keywords from the Java section.
          kw_abstract, kw_extends, kw_implements, kw_instanceof, kw_interface});
 
diff --git a/clang/lib/Format/TokenAnnotator.cpp b/clang/lib/Format/TokenAnnotator.cpp
--- a/clang/lib/Format/TokenAnnotator.cpp
+++ b/clang/lib/Format/TokenAnnotator.cpp
@@ -3957,8 +3957,9 @@
             tok::kw_return, Keywords.kw_yield, tok::kw_continue, tok::kw_break,
             tok::kw_throw, Keywords.kw_interface, Keywords.kw_type,
             tok::kw_static, tok::kw_public, tok::kw_private, tok::kw_protected,
-            Keywords.kw_readonly, Keywords.kw_abstract, Keywords.kw_get,
-            Keywords.kw_set, Keywords.kw_async, Keywords.kw_await))
+            Keywords.kw_readonly, Keywords.kw_override, Keywords.kw_abstract,
+            Keywords.kw_get, Keywords.kw_set, Keywords.kw_async,
+            Keywords.kw_await))
       return false; // Otherwise automatic semicolon insertion would trigger.
     if (Right.NestingLevel == 0 &&
         (Left.Tok.getIdentifierInfo() ||
diff --git a/clang/lib/Format/UnwrappedLineFormatter.cpp b/clang/lib/Format/UnwrappedLineFormatter.cpp
--- a/clang/lib/Format/UnwrappedLineFormatter.cpp
+++ b/clang/lib/Format/UnwrappedLineFormatter.cpp
@@ -632,10 +632,11 @@
         FormatToken *RecordTok = Line.First;
         // Skip record modifiers.
         while (RecordTok->Next &&
-               RecordTok->isOneOf(
-                   tok::kw_typedef, tok::kw_export, Keywords.kw_declare,
-                   Keywords.kw_abstract, tok::kw_default, tok::kw_public,
-                   tok::kw_private, tok::kw_protected, Keywords.kw_internal))
+               RecordTok->isOneOf(tok::kw_typedef, tok::kw_export,
+                                  Keywords.kw_declare, Keywords.kw_abstract,
+                                  tok::kw_default, Keywords.kw_override,
+                                  tok::kw_public, tok::kw_private,
+                                  tok::kw_protected, Keywords.kw_internal))
           RecordTok = RecordTok->Next;
         if (RecordTok &&
             RecordTok->isOneOf(tok::kw_class, tok::kw_union, tok::kw_struct,
diff --git a/clang/lib/Format/UnwrappedLineParser.cpp b/clang/lib/Format/UnwrappedLineParser.cpp
--- a/clang/lib/Format/UnwrappedLineParser.cpp
+++ b/clang/lib/Format/UnwrappedLineParser.cpp
@@ -962,8 +962,8 @@
               Keywords.kw_function, Keywords.kw_import, Keywords.kw_is,
               Keywords.kw_let, Keywords.kw_var, tok::kw_const,
               Keywords.kw_abstract, Keywords.kw_extends, Keywords.kw_implements,
-              Keywords.kw_instanceof, Keywords.kw_interface, Keywords.kw_throws,
-              Keywords.kw_from));
+              Keywords.kw_instanceof, Keywords.kw_interface,
+              Keywords.kw_override, Keywords.kw_throws, Keywords.kw_from));
 }
 
 static bool mustBeJSIdentOrValue(const AdditionalKeywords &Keywords,
diff --git a/clang/unittests/Format/FormatTestJS.cpp b/clang/unittests/Format/FormatTestJS.cpp
--- a/clang/unittests/Format/FormatTestJS.cpp
+++ b/clang/unittests/Format/FormatTestJS.cpp
@@ -854,6 +854,26 @@
                "}\n");
 }
 
+TEST_F(FormatTestJS, OverriddenMembers) {
+  verifyFormat(
+      "class C extends P {\n"
+      "  protected override "
+      "anOverlyLongPropertyNameSoLongItHasToGoInASeparateLineWhenOverriden:\n"
+      "      undefined;\n"
+      "}\n");
+  verifyFormat(
+      "class C extends P {\n"
+      "  protected override "
+      "anOverlyLongMethodNameSoLongItHasToGoInASeparateLineWhenOverriden() {\n"
+      "  }\n"
+      "}\n");
+  verifyFormat("class C extends P {\n"
+               "  protected override aMethodName<ATypeParam extends {},\n"
+               "                                                    BTypeParam "
+               "extends {}>() {}\n"
+               "}\n");
+}
+
 TEST_F(FormatTestJS, FunctionParametersTrailingComma) {
   verifyFormat("function trailingComma(\n"
                "    p1,\n"