diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index fd277da4cd..31249584f7 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -85,6 +85,7 @@ option(onnxruntime_TENSORRT_PLACEHOLDER_BUILDER "Instantiate Placeholder TensorR
 option(onnxruntime_ENABLE_LTO "Enable link time optimization" OFF)
 option(onnxruntime_CROSS_COMPILING "Cross compiling onnx runtime" OFF)
 option(onnxruntime_GCOV_COVERAGE "Compile with options necessary to run code coverage" OFF)
+option(onnxruntime_DONT_VECTORIZE "Do not vectorize operations in Eigen" OFF)
 
 #It's preferred to turn it OFF when onnxruntime is dynamically linked to PROTOBUF. But Tensort always required the full version of protobuf.
 cmake_dependent_option(onnxruntime_USE_FULL_PROTOBUF "Link to libprotobuf instead of libprotobuf-lite when this option is ON" OFF "NOT onnxruntime_USE_TENSORRT" ON)
@@ -518,6 +519,10 @@ if (MSVC)
           -DEIGEN_STRONG_INLINE=inline)
 endif()
 
+if ( onnxruntime_DONT_VECTORIZE )
+  add_definitions(-DEIGEN_DONT_VECTORIZE=1)
+endif()
+
 if (onnxruntime_CROSS_COMPILING)
   set(CMAKE_CROSSCOMPILING ON)
   check_cxx_compiler_flag(-Wno-error HAS_NOERROR)