diff --git a/clang/lib/Parse/ParseStmtAsm.cpp b/clang/lib/Parse/ParseStmtAsm.cpp
index 0f21037b6100..7d0818840a4f 100644
--- a/clang/lib/Parse/ParseStmtAsm.cpp
+++ b/clang/lib/Parse/ParseStmtAsm.cpp
@@ -941,7 +941,7 @@ const char *Parser::GNUAsmQualifiers::getQualifierName(AQ Qualifier) {
     case AQ_goto: return "goto";
     case AQ_unspecified: return "unspecified";
   }
-  llvm_unreachable("Unkown GNUAsmQualifier");
+  llvm_unreachable("Unknown GNUAsmQualifier");
 }
 
 Parser::GNUAsmQualifiers::AQ
diff --git a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
index 74c689730e58..392049e21c6e 100644
--- a/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
+++ b/clang/lib/StaticAnalyzer/Frontend/AnalysisConsumer.cpp
@@ -154,7 +154,7 @@ public:
     break;
 #include "clang/StaticAnalyzer/Core/Analyses.def"
     default:
-      llvm_unreachable("Unkown analyzer output type!");
+      llvm_unreachable("Unknown analyzer output type!");
     }
 
     // Create the analyzer component creators.
diff --git a/clang/test/Analysis/fuchsia_handle.cpp b/clang/test/Analysis/fuchsia_handle.cpp
index c20622be543f..dade5261bd78 100644
--- a/clang/test/Analysis/fuchsia_handle.cpp
+++ b/clang/test/Analysis/fuchsia_handle.cpp
@@ -261,7 +261,7 @@ private:
   T handle;
 };
 
-void doNotWarnOnUnkownDtor() {
+void doNotWarnOnUnknownDtor() {
   HandleWrapperUnkonwDtor<zx_handle_t> w1;
   zx_handle_t sb;
   if (zx_channel_create(0, w1.get_handle_address(), &sb))