diff --git a/var/spack/repos/builtin/packages/ntpoly/package.py b/var/spack/repos/builtin/packages/ntpoly/package.py
new file mode 100644
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+++ b/var/spack/repos/builtin/packages/ntpoly/package.py
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+# Copyright 2013-2019 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 import *
+
+
+class Ntpoly(CMakePackage):
+    """NTPoly - parallel library for computing matrix functions.
+
+    NTPoly is a library for computing the functions of
+    sparse, hermitian matrices based on polynomial expansions. For
+    sufficiently sparse matrices, most of the matrix functions in
+    NTPoly can be computed in linear time.
+    """
+
+    homepage = "https://william-dawson.github.io/NTPoly/"
+    url      = "https://github.com/william-dawson/NTPoly/archive/ntpoly-v2.3.1-alpha.tar.gz"
+
+    version('2.3.1', sha256='af8c7690321607fbdee9671b9cb3acbed945148014e0541435858cf82bfd887e')
+
+    depends_on('cmake', type='build')
+    depends_on('blas', type='link')
+    depends_on('mpi@3')
+
+    def cmake_args(self):
+        args = ["-DNOSWIG=Yes"]
+        return args