diff --git a/packages/mom5/package.py b/packages/mom5/package.py
new file mode 100644
index 0000000..c0e40aa
--- /dev/null
+++ b/packages/mom5/package.py
@@ -0,0 +1,53 @@
+# Copyright 2013-2022 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack.package import *
+from spack.util.executable import which
+
+class Mom5(CMakePackage):
+    """FIXME: Put a proper description of your package here."""
+
+    homepage = "https://mom-ocean.github.io"
+    git      = "https://github.com/ACCESS-NRI/MOM5.git"
+
+    version("5.1", git=git)
+
+    # FIXME: Add a list of GitHub accounts to
+    # notify when the package is updated.
+    # maintainers = ['github_user1', 'github_user2']
+
+    variant("netcdf", default=True, description="enable netcdf interface")
+
+    depends_on("mpi")
+    depends_on("netcdf-c", type="link", when="+netcdf")
+    depends_on("netcdf-fortran", type="link", when="+netcdf")
+
+    root_cmakelists_dir = 'cmake'
+
+    def patch(self):
+
+        # Get the commit hash
+        git_exe = which('git')
+        commit = git_exe("rev-parse", "--short", "HEAD", output=str).strip()
+
+        # Write commit into version file
+        version_file = 'src/version/version.F90'
+
+        copy(version_file+'.template', version_file)
+        filter_file('{MOM_COMMIT_HASH}', commit, version_file, string=True)
+
+    def cmake_args(self):
+        define = self.define
+        define_from_variant = self.define_from_variant
+        spec = self.spec
+        env["CC"] = spec["mpi"].mpicc
+        env["FC"] = spec["mpi"].mpifc
+        args = [
+            define("CPPFLAGS", "-Duse_netCDF=1 -Duse_libMPI=1 -DLAND_BND_TRACERS=1 -DUSE_OCEAN_BGC=1 -DENABLE_ODA=1 -DSPMD=1")
+        ]
+
+        return args
+
+