diff --git a/cmake/external/onnxruntime_external_deps.cmake b/cmake/external/onnxruntime_external_deps.cmake
index 43f18abbe9522..2c6c4e709fb88 100644
--- a/cmake/external/onnxruntime_external_deps.cmake
+++ b/cmake/external/onnxruntime_external_deps.cmake
@@ -542,7 +542,9 @@ if(TARGET ONNX::onnx_proto AND NOT TARGET onnx_proto)
   add_library(onnx_proto ALIAS ONNX::onnx_proto)
 endif()
 
-find_package(Eigen3 CONFIG)
+if (onnxruntime_USE_PREINSTALLED_EIGEN)
+  find_package(Eigen3 CONFIG)
+endif()
 if(Eigen3_FOUND)
   get_target_property(eigen_INCLUDE_DIRS Eigen3::Eigen INTERFACE_INCLUDE_DIRECTORIES)
 else()