diff --git a/var/spack/repos/builtin/packages/branson/package.py b/var/spack/repos/builtin/packages/branson/package.py
new file mode 100644
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+++ b/var/spack/repos/builtin/packages/branson/package.py
@@ -0,0 +1,61 @@
+##############################################################################
+# Copyright (c) 2017, Los Alamos National Security, LLC
+# Produced at the Los Alamos National Laboratory.
+#
+# This file is part of Spack.
+# Created by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
+# LLNL-CODE-647188
+#
+# For details, see https://github.com/llnl/spack
+# Please also see the NOTICE and LICENSE files for our notice and the LGPL.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License (as
+# published by the Free Software Foundation) version 2.1, February 1999.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
+# conditions of the GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##############################################################################
+from spack import *
+
+
+class Branson(CMakePackage):
+    """Branson's purpose is to study different algorithms for parallel Monte
+    Carlo transport. Currently it contains particle passing and mesh passing
+    methods for domain decomposition."""
+
+    homepage = "https://github.com/lanl/branson"
+    url      = "https://github.com/lanl/branson/archive/1.01.zip"
+
+    tags = ['proxy-app']
+
+    version('develop', git='https://github.com/lanl/branson', branch='develop')
+    version('1.01', 'cf7095a887a8dd7d417267615bd0452a')
+
+    depends_on('mpi')
+    depends_on('boost')
+    depends_on('metis')
+    depends_on('parmetis')
+
+    root_cmakelists_dir = 'src'
+
+    def cmake_args(self):
+        spec = self.spec
+        args = []
+        args.append('-DCMAKE_C_COMPILER=%s' % spec['mpi'].mpicc)
+        args.append('-DCMAKE_CXX_COMPILER=%s' % spec['mpi'].mpicxx)
+        args.append('-DCMAKE_Fortran_COMPILER=%s' % spec['mpi'].mpifc)
+        return args
+
+    def install(self, spec, prefix):
+        mkdir(prefix.bin)
+        mkdir(prefix.doc)
+        install('spack-build/BRANSON', prefix.bin)
+        install('LICENSE.txt', prefix.doc)
+        install('README.md', prefix.doc)