diff --git a/runtime/Cpp/CMakeLists.txt b/runtime/Cpp/CMakeLists.txt
index 48f92c20b9..9937fca71b 100644
--- a/runtime/Cpp/CMakeLists.txt
+++ b/runtime/Cpp/CMakeLists.txt
@@ -32,6 +32,7 @@ endif(NOT WITH_DEMO)
 option(WITH_LIBCXX "Building with clang++ and libc++(in Linux). To enable with: -DWITH_LIBCXX=On" Off)
 option(WITH_STATIC_CRT "(Visual C++) Enable to statically link CRT, which avoids requiring users to install the redistribution package.
  To disable with: -DWITH_STATIC_CRT=Off" On)
+option(DISABLE_WARNINGS "Suppress compiler warnings for all built ANTLR targets" OFF)
 
 project(LIBANTLR4)
 
@@ -77,8 +78,16 @@ endif(WITH_DEMO)
 
 if(MSVC_VERSION)
   set(MY_CXX_WARNING_FLAGS "  /W4")
+
+  if(DISABLE_WARNINGS)
+    set(MY_CXX_WARNING_FLAGS "  /w")
+  endif()
 else()
   set(MY_CXX_WARNING_FLAGS "  -Wall -pedantic -W")
+
+  if(DISABLE_WARNINGS)
+    set(MY_CXX_WARNING_FLAGS "  -w")
+  endif()
 endif()
 
 # Define USE_UTF8_INSTEAD_OF_CODECVT macro.
diff --git a/runtime/Cpp/cmake/ExternalAntlr4Cpp.cmake b/runtime/Cpp/cmake/ExternalAntlr4Cpp.cmake
index 36692a5411..2a399ac9da 100644
--- a/runtime/Cpp/cmake/ExternalAntlr4Cpp.cmake
+++ b/runtime/Cpp/cmake/ExternalAntlr4Cpp.cmake
@@ -96,6 +96,7 @@ if(ANTLR4_ZIP_REPOSITORY)
       CMAKE_CACHE_ARGS
           -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
           -DWITH_STATIC_CRT:BOOL=${ANTLR4_WITH_STATIC_CRT}
+          -DDISABLE_WARNINGS:BOOL=ON
           # -DCMAKE_CXX_STANDARD:STRING=17 # if desired, compile the runtime with a different C++ standard
           # -DCMAKE_CXX_STANDARD:STRING=${CMAKE_CXX_STANDARD} # alternatively, compile the runtime with the same C++ standard as the outer project
       INSTALL_COMMAND ""
@@ -114,6 +115,7 @@ else()
       CMAKE_CACHE_ARGS
           -DCMAKE_BUILD_TYPE:STRING=${CMAKE_BUILD_TYPE}
           -DWITH_STATIC_CRT:BOOL=${ANTLR4_WITH_STATIC_CRT}
+          -DDISABLE_WARNINGS:BOOL=ON
           # -DCMAKE_CXX_STANDARD:STRING=17 # if desired, compile the runtime with a different C++ standard
           # -DCMAKE_CXX_STANDARD:STRING=${CMAKE_CXX_STANDARD} # alternatively, compile the runtime with the same C++ standard as the outer project
       INSTALL_COMMAND ""