diff --git a/clang-tools-extra/clangd/refactor/Rename.cpp b/clang-tools-extra/clangd/refactor/Rename.cpp
--- a/clang-tools-extra/clangd/refactor/Rename.cpp
+++ b/clang-tools-extra/clangd/refactor/Rename.cpp
@@ -96,6 +96,15 @@
   return Result;
 }
 
+bool isBlacklisted(const NamedDecl &RenameDecl) {
+  static const auto *StdSymbols = new llvm::DenseSet<llvm::StringRef>({
+#define SYMBOL(Name, NameSpace, Header) {#NameSpace #Name},
+#include "StdSymbolMap.inc"
+#undef SYMBOL
+  });
+  return StdSymbols->count(RenameDecl.getQualifiedNameAsString());
+}
+
 enum ReasonToReject {
   NoSymbolFound,
   NoIndexProvided,
@@ -105,7 +114,7 @@
   AmbiguousSymbol,
 };
 
-llvm::Optional<ReasonToReject> renameable(const Decl &RenameDecl,
+llvm::Optional<ReasonToReject> renameable(const NamedDecl &RenameDecl,
                                           StringRef MainFilePath,
                                           const SymbolIndex *Index,
                                           bool CrossFile) {
@@ -120,6 +129,9 @@
   if (RenameDecl.getParentFunctionOrMethod())
     return None;
 
+  if (isBlacklisted(RenameDecl))
+    return ReasonToReject::UnsupportedSymbol;
+
   // Check whether the symbol being rename is indexable.
   auto &ASTCtx = RenameDecl.getASTContext();
   bool MainFileIsHeader = isHeaderFile(MainFilePath, ASTCtx.getLangOpts());
@@ -131,11 +143,9 @@
     IsMainFileOnly = false;
   else if (!DeclaredInMainFile)
     IsMainFileOnly = false;
-  bool IsIndexable =
-      isa<NamedDecl>(RenameDecl) &&
-      SymbolCollector::shouldCollectSymbol(
-          cast<NamedDecl>(RenameDecl), RenameDecl.getASTContext(),
-          SymbolCollector::Options(), IsMainFileOnly);
+  bool IsIndexable = SymbolCollector::shouldCollectSymbol(
+      RenameDecl, RenameDecl.getASTContext(), SymbolCollector::Options(),
+      IsMainFileOnly);
   if (!IsIndexable) // If the symbol is not indexable, we disallow rename.
     return ReasonToReject::NonIndexable;
 
@@ -222,7 +232,6 @@
   llvm::DenseSet<SymbolID> TargetIDs;
   for (auto &USR : RenameUSRs)
     TargetIDs.insert(SymbolID(USR));
-
   std::vector<SourceLocation> Results;
   for (Decl *TopLevelDecl : AST.getLocalTopLevelDecls()) {
     findExplicitReferences(TopLevelDecl, [&](ReferenceLoc Ref) {
@@ -467,13 +476,13 @@
   if (DeclsUnderCursor.size() > 1)
     return makeError(ReasonToReject::AmbiguousSymbol);
 
-  const auto *RenameDecl = llvm::dyn_cast<NamedDecl>(*DeclsUnderCursor.begin());
+  const auto *RenameDecl = llvm::dyn_cast<NamedDecl>(
+      (*DeclsUnderCursor.begin())->getCanonicalDecl());
   if (!RenameDecl)
     return makeError(ReasonToReject::UnsupportedSymbol);
 
-  auto Reject =
-      renameable(*RenameDecl->getCanonicalDecl(), RInputs.MainFilePath,
-                 RInputs.Index, RInputs.AllowCrossFile);
+  auto Reject = renameable(*RenameDecl, RInputs.MainFilePath, RInputs.Index,
+                           RInputs.AllowCrossFile);
   if (Reject)
     return makeError(*Reject);
 
diff --git a/clang-tools-extra/clangd/unittests/RenameTests.cpp b/clang-tools-extra/clangd/unittests/RenameTests.cpp
--- a/clang-tools-extra/clangd/unittests/RenameTests.cpp
+++ b/clang-tools-extra/clangd/unittests/RenameTests.cpp
@@ -383,12 +383,12 @@
 
       // Typedef.
       R"cpp(
-        namespace std {
+        namespace ns {
         class basic_string {};
         typedef basic_string [[s^tring]];
-        } // namespace std
+        } // namespace ns
 
-        std::[[s^tring]] foo();
+        ns::[[s^tring]] foo();
       )cpp",
 
       // Variable.
@@ -539,6 +539,13 @@
          void fo^o() {})cpp",
        "used outside main file", !HeaderFile, nullptr /*no index*/},
 
+      {R"cpp(// disallow rename on blacklisted symbols (e.g. std symbols)
+         namespace std {
+         class str^ing {};
+         }
+       )cpp",
+       "not a supported kind", !HeaderFile, Index},
+
       {R"cpp(
          void foo(int);
          void foo(char);