diff --git a/cpp/cmake_modules/ThirdpartyToolchain.cmake b/cpp/cmake_modules/ThirdpartyToolchain.cmake
index 978f03198..3a6f36350 100644
--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -975,9 +975,11 @@ set(EP_COMMON_CMAKE_ARGS
 
 # Enable s/ccache if set by parent.
 if(CMAKE_C_COMPILER_LAUNCHER AND CMAKE_CXX_COMPILER_LAUNCHER)
+  file(TO_CMAKE_PATH "${CMAKE_C_COMPILER_LAUNCHER}" EP_CMAKE_C_COMPILER_LAUNCHER)
+  file(TO_CMAKE_PATH "${CMAKE_CXX_COMPILER_LAUNCHER}" EP_CMAKE_CXX_COMPILER_LAUNCHER)
   list(APPEND EP_COMMON_CMAKE_ARGS
-       -DCMAKE_C_COMPILER_LAUNCHER=${CMAKE_C_COMPILER_LAUNCHER}
-       -DCMAKE_CXX_COMPILER_LAUNCHER=${CMAKE_CXX_COMPILER_LAUNCHER})
+       -DCMAKE_C_COMPILER_LAUNCHER=${EP_CMAKE_C_COMPILER_LAUNCHER}
+       -DCMAKE_CXX_COMPILER_LAUNCHER=${EP_CMAKE_CXX_COMPILER_LAUNCHER})
 endif()
 
 if(NOT ARROW_VERBOSE_THIRDPARTY_BUILD)