diff --git a/releasenotes/notes/add-new-identity-clients-as-library-3e6559d4bff3e776.yaml b/releasenotes/notes/add-new-identity-clients-as-library-3e6559d4bff3e776.yaml
new file mode 100644
index 0000000..da0e85b
--- /dev/null
+++ b/releasenotes/notes/add-new-identity-clients-as-library-3e6559d4bff3e776.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    Define identity service clients as libraries
+    Add new service clients to the library interface so the other projects can use these modules as stable libraries without
+    any maintenance changes.
+
+      * regions_client(v3)
diff --git a/tempest/services/identity/v3/json/regions_client.py b/tempest/lib/services/identity/v3/regions_client.py
similarity index 100%
rename from tempest/services/identity/v3/json/regions_client.py
rename to tempest/lib/services/identity/v3/regions_client.py
diff --git a/tempest/services/identity/v3/__init__.py b/tempest/services/identity/v3/__init__.py
index 6ad8ef2..55218bb 100644
--- a/tempest/services/identity/v3/__init__.py
+++ b/tempest/services/identity/v3/__init__.py
@@ -14,6 +14,7 @@
 
 from tempest.lib.services.identity.v3.endpoints_client import EndPointsClient
 from tempest.lib.services.identity.v3.policies_client import PoliciesClient
+from tempest.lib.services.identity.v3.regions_client import RegionsClient
 from tempest.lib.services.identity.v3.token_client import V3TokenClient
 from tempest.services.identity.v3.json.credentials_client import \
     CredentialsClient
@@ -21,13 +22,12 @@
 from tempest.services.identity.v3.json.groups_client import GroupsClient
 from tempest.services.identity.v3.json.identity_client import IdentityClient
 from tempest.services.identity.v3.json.projects_client import ProjectsClient
-from tempest.services.identity.v3.json.regions_client import RegionsClient
 from tempest.services.identity.v3.json.roles_client import RolesClient
 from tempest.services.identity.v3.json.services_client import ServicesClient
 from tempest.services.identity.v3.json.trusts_client import TrustsClient
 from tempest.services.identity.v3.json.users_clients import UsersClient
 
-__all__ = ['EndPointsClient', 'PoliciesClient', 'V3TokenClient',
-           'CredentialsClient', 'DomainsClient', 'GroupsClient',
-           'IdentityClient', 'ProjectsClient', 'RegionsClient', 'RolesClient',
+__all__ = ['EndPointsClient', 'PoliciesClient', 'RegionsClient',
+           'V3TokenClient', 'CredentialsClient', 'DomainsClient',
+           'GroupsClient', 'IdentityClient', 'ProjectsClient', 'RolesClient',
            'ServicesClient', 'TrustsClient', 'UsersClient', ]
diff --git a/tempest/tests/lib/services/identity/v3/test_regions_client.py b/tempest/tests/lib/services/identity/v3/test_regions_client.py
new file mode 100644
index 0000000..a2cb86f
--- /dev/null
+++ b/tempest/tests/lib/services/identity/v3/test_regions_client.py
@@ -0,0 +1,125 @@
+# Copyright 2016 Red Hat, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from tempest.lib.services.identity.v3 import regions_client
+from tempest.tests.lib import fake_auth_provider
+from tempest.tests.lib.services import base
+
+
+class TestRegionsClient(base.BaseServiceTest):
+    FAKE_CREATE_REGION = {
+        "region": {
+            "description": "My subregion",
+            "id": "RegionOneSubRegion",
+            "parent_region_id": "RegionOne"
+            }
+        }
+
+    FAKE_REGION_INFO = {
+        "region": {
+            "description": "My subregion 3",
+            "id": "RegionThree",
+            "links": {
+                "self": "http://example.com/identity/v3/regions/RegionThree"
+                },
+            "parent_region_id": "RegionOne"
+            }
+        }
+
+    FAKE_LIST_REGIONS = {
+        "links": {
+            "next": None,
+            "previous": None,
+            "self": "http://example.com/identity/v3/regions"
+            },
+        "regions": [
+            {
+                "description": "",
+                "id": "RegionOne",
+                "links": {
+                    "self": "http://example.com/identity/v3/regions/RegionOne"
+                    },
+                "parent_region_id": None
+                }
+            ]
+        }
+
+    def setUp(self):
+        super(TestRegionsClient, self).setUp()
+        fake_auth = fake_auth_provider.FakeAuthProvider()
+        self.client = regions_client.RegionsClient(fake_auth, 'identity',
+                                                   'regionOne')
+
+    def _test_create_region(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.create_region,
+            'tempest.lib.common.rest_client.RestClient.post',
+            self.FAKE_CREATE_REGION,
+            bytes_body,
+            status=201)
+
+    def _test_show_region(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.show_region,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_REGION_INFO,
+            bytes_body,
+            region_id="RegionThree")
+
+    def _test_list_regions(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.list_regions,
+            'tempest.lib.common.rest_client.RestClient.get',
+            self.FAKE_LIST_REGIONS,
+            bytes_body)
+
+    def _test_update_region(self, bytes_body=False):
+        self.check_service_client_function(
+            self.client.update_region,
+            'tempest.lib.common.rest_client.RestClient.patch',
+            self.FAKE_REGION_INFO,
+            bytes_body,
+            region_id="RegionThree")
+
+    def test_create_region_with_str_body(self):
+        self._test_create_region()
+
+    def test_create_region_with_bytes_body(self):
+        self._test_create_region(bytes_body=True)
+
+    def test_show_region_with_str_body(self):
+        self._test_show_region()
+
+    def test_show_region_with_bytes_body(self):
+        self._test_show_region(bytes_body=True)
+
+    def test_list_regions_with_str_body(self):
+        self._test_list_regions()
+
+    def test_list_regions_with_bytes_body(self):
+        self._test_list_regions(bytes_body=True)
+
+    def test_update_region_with_str_body(self):
+        self._test_update_region()
+
+    def test_update_region_with_bytes_body(self):
+        self._test_update_region(bytes_body=True)
+
+    def test_delete_region(self):
+        self.check_service_client_function(
+            self.client.delete_region,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {},
+            region_id="RegionThree",
+            status=204)