diff --git a/clang-tools-extra/clang-include-fixer/tool/ClangIncludeFixer.cpp b/clang-tools-extra/clang-include-fixer/tool/ClangIncludeFixer.cpp
index 746ba7bcea01..9f73f4799805 100644
--- a/clang-tools-extra/clang-include-fixer/tool/ClangIncludeFixer.cpp
+++ b/clang-tools-extra/clang-include-fixer/tool/ClangIncludeFixer.cpp
@@ -167,13 +167,11 @@ createSymbolIndexManager(StringRef FilePath) {
     // Parse input and fill the database with it.
     // <symbol>=<header><, header...>
     // Multiple symbols can be given, separated by semicolons.
-    std::map<std::string, std::vector<std::string>> SymbolsMap;
     SmallVector<StringRef, 4> SemicolonSplits;
     StringRef(Input).split(SemicolonSplits, ";");
     std::vector<find_all_symbols::SymbolAndSignals> Symbols;
     for (StringRef Pair : SemicolonSplits) {
       auto Split = Pair.split('=');
-      std::vector<std::string> Headers;
       SmallVector<StringRef, 4> CommaSplits;
       Split.second.split(CommaSplits, ",");
       for (size_t I = 0, E = CommaSplits.size(); I != E; ++I)
diff --git a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
index 603d0954e1b1..42fb95bf1052 100644
--- a/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
+++ b/clang-tools-extra/clang-tidy/openmp/ExceptionEscapeCheck.cpp
@@ -20,8 +20,7 @@ ExceptionEscapeCheck::ExceptionEscapeCheck(StringRef Name,
                                            ClangTidyContext *Context)
     : ClangTidyCheck(Name, Context),
       RawIgnoredExceptions(Options.get("IgnoredExceptions", "")) {
-  llvm::SmallVector<StringRef, 8> FunctionsThatShouldNotThrowVec,
-      IgnoredExceptionsVec;
+  llvm::SmallVector<StringRef, 8> IgnoredExceptionsVec;
 
   llvm::StringSet<> IgnoredExceptions;
   StringRef(RawIgnoredExceptions).split(IgnoredExceptionsVec, ",", -1, false);
diff --git a/clang-tools-extra/clang-tidy/readability/MathMissingParenthesesCheck.cpp b/clang-tools-extra/clang-tidy/readability/MathMissingParenthesesCheck.cpp
index 64ce94e3fc1d..cf4214a05968 100644
--- a/clang-tools-extra/clang-tidy/readability/MathMissingParenthesesCheck.cpp
+++ b/clang-tools-extra/clang-tidy/readability/MathMissingParenthesesCheck.cpp
@@ -88,10 +88,6 @@ static void addParantheses(const BinaryOperator *BinOp,
 void MathMissingParenthesesCheck::check(
     const MatchFinder::MatchResult &Result) {
   const auto *BinOp = Result.Nodes.getNodeAs<BinaryOperator>("binOp");
-  std::vector<
-      std::pair<clang::SourceRange, std::pair<const clang::BinaryOperator *,
-                                              const clang::BinaryOperator *>>>
-      Insertions;
   const SourceManager &SM = *Result.SourceManager;
   const clang::LangOptions &LO = Result.Context->getLangOpts();
   addParantheses(BinOp, nullptr, this, SM, LO);
diff --git a/clang-tools-extra/clangd/tool/ClangdMain.cpp b/clang-tools-extra/clangd/tool/ClangdMain.cpp
index 4bd256d6be22..b11d194da04d 100644
--- a/clang-tools-extra/clangd/tool/ClangdMain.cpp
+++ b/clang-tools-extra/clangd/tool/ClangdMain.cpp
@@ -913,7 +913,6 @@ clangd accepts flags on the commandline, and in the CLANGD_FLAGS environment var
   if (!ResourceDir.empty())
     Opts.ResourceDir = ResourceDir;
   Opts.BuildDynamicSymbolIndex = true;
-  std::vector<std::unique_ptr<SymbolIndex>> IdxStack;
 #if CLANGD_ENABLE_REMOTE
   if (RemoteIndexAddress.empty() != ProjectRoot.empty()) {
     llvm::errs() << "remote-index-address and project-path have to be "