--- a/cpp/cmake_modules/ThirdpartyToolchain.cmake
+++ b/cpp/cmake_modules/ThirdpartyToolchain.cmake
@@ -2319,6 +2319,14 @@ endif()
 # mimalloc - Cross-platform high-performance allocator, from Microsoft

 if(ARROW_MIMALLOC)
+  find_package(mimalloc REQUIRED CONFIG)
+  if(TARGET mimalloc-static)
+    add_library(mimalloc::mimalloc ALIAS mimalloc-static)
+  else()
+    add_library(mimalloc::mimalloc ALIAS mimalloc)
+  endif()
+endif()
+if(0)
   if(NOT ARROW_ENABLE_THREADING)
     message(FATAL_ERROR "Can't use mimalloc with ARROW_ENABLE_THREADING=OFF")
   endif()