diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8d527f1b..5fab0449 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Add `FindJeMalloc.cmake` for use with builds of GEOSgcm
+
 ### Changed
 
 ### Deprecated
diff --git a/external_libraries/FindJeMalloc.cmake b/external_libraries/FindJeMalloc.cmake
new file mode 100644
index 00000000..2e50a822
--- /dev/null
+++ b/external_libraries/FindJeMalloc.cmake
@@ -0,0 +1,29 @@
+# - Find JeMalloc library
+# Find the native JeMalloc includes and library
+#
+# JeMalloc_INCLUDE_DIRS - where to find jemalloc.h, etc.
+# JeMalloc_LIBRARIES - List of libraries when using jemalloc.
+# JeMalloc_FOUND - True if jemalloc found.
+
+find_path(JeMalloc_INCLUDE_DIRS
+  NAMES jemalloc/jemalloc.h
+  HINTS ${JEMALLOC_ROOT_DIR}/include ENV JEMALLOC_INCLUDE_DIR)
+
+find_library(JeMalloc_LIBRARIES
+  NAMES jemalloc
+  HINTS ${JEMALLOC_ROOT_DIR}/lib ENV JEMALLOC_LIB_DIR)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(JeMalloc DEFAULT_MSG JeMalloc_LIBRARIES JeMalloc_INCLUDE_DIRS)
+
+mark_as_advanced(
+  JeMalloc_LIBRARIES
+  JeMalloc_INCLUDE_DIRS)
+
+if(JeMalloc_FOUND AND NOT (TARGET JeMalloc::JeMalloc))
+  add_library (JeMalloc::JeMalloc UNKNOWN IMPORTED)
+  set_target_properties(JeMalloc::JeMalloc
+    PROPERTIES
+      IMPORTED_LOCATION ${JeMalloc_LIBRARIES}
+      INTERFACE_INCLUDE_DIRECTORIES ${JeMalloc_INCLUDE_DIRS})
+endif()