diff --git a/nailgun/entities.py b/nailgun/entities.py
index 19a45782..35e5dc27 100644
--- a/nailgun/entities.py
+++ b/nailgun/entities.py
@@ -4531,6 +4531,7 @@ def path(self, which=None):
             'errata/applicability',
             'facts',
             'packages',
+            'play_roles',
             'power',
             'puppetclass_ids',
             'smart_class_parameters',
@@ -4754,6 +4755,25 @@ def list_ansible_roles(self, synchronous=True, timeout=None, **kwargs):
         response = client.get(self.path('ansible_roles'), **kwargs)
         return _handle_response(response, self._server_config, synchronous, timeout)
 
+    def play_ansible_roles(self, synchronous=True, timeout=None, **kwargs):
+        """Play all assigned ansible roles on a Host
+
+        :param synchronous: What should happen if the server returns an HTTP
+            202 (accepted) status code? Wait for the task to complete if
+            ``True``. Immediately return the server's response otherwise.
+        :param timeout: Maximum number of seconds to wait until timing out.
+            Defaults to ``nailgun.entity_mixins.TASK_TIMEOUT``.
+        :param kwargs: Arguments to pass to requests.
+        :returns: Ansible task id
+        :raises: ``requests.exceptions.HTTPError`` If the server responds with
+            an HTTP 4XX or 5XX message.
+
+        """
+        kwargs = kwargs.copy()  # shadow the passed-in kwargs
+        kwargs.update(self._server_config.get_client_kwargs())
+        response = client.post(self.path('play_roles'), **kwargs)
+        return _handle_response(response, self._server_config, synchronous, timeout)['task_id']
+
     def list_provisioning_templates(self, synchronous=True, timeout=None, **kwargs):
         """List all Provisioning templates assigned to a Host
 
diff --git a/tests/test_entities.py b/tests/test_entities.py
index f4630a49..f488c17d 100644
--- a/tests/test_entities.py
+++ b/tests/test_entities.py
@@ -331,6 +331,7 @@ def test_id_and_which(self):
             (entities.Host, 'ansible_roles'),
             (entities.Host, 'assign_ansible_roles'),
             (entities.Host, 'template'),
+            (entities.Host, 'play_roles'),
             (entities.HostGroup, 'clone'),
             (entities.HostGroup, 'puppetclass_ids'),
             (entities.HostGroup, 'rebuild_config'),
@@ -3117,6 +3118,22 @@ def test_read_template(self):
         self.assertEqual(handler.call_count, 1)
         self.assertEqual(handler.return_value, response)
 
+    def test_play_ansible_roles(self):
+        """Play Ansible roles"""
+        cfg = config.ServerConfig(url='foo')
+        host = entities.Host(cfg, id=42)
+        exp_ret = mock.MagicMock()
+        exp_ret.status = ACCEPTED
+        exp_ret.content = {'bar': 'baz', 'task_id': 43}
+        with mock.patch.object(client, 'post', return_value=exp_ret) as post:
+            res = host.play_ansible_roles()
+        self.assertEqual(post.call_count, 1)
+        self.assertEqual(len(post.call_args), 2)
+        self.assertEqual(len(post.call_args[0]), 1)  # post called with 1 positional argument
+        self.assertEqual(len(post.call_args[1]), 0)  # post called with no keyword argument
+        self.assertEqual(post.call_args[0][0], 'foo/api/v2/hosts/42/play_roles')
+        self.assertEqual(res, 43)
+
 
 class PuppetClassTestCase(TestCase):
     """Tests for :class:`nailgun.entities.PuppetClass`."""