diff --git a/surveil/api/controllers/v2/config/__init__.py b/surveil/api/controllers/v2/config/__init__.py
index 3c415cf..c0afb9d 100644
--- a/surveil/api/controllers/v2/config/__init__.py
+++ b/surveil/api/controllers/v2/config/__init__.py
@@ -15,6 +15,7 @@
 from surveil.api.controllers.v2.config import commands
 from surveil.api.controllers.v2.config import contacts
 from surveil.api.controllers.v2.config import hosts
+from surveil.api.controllers.v2.config import realms
 from surveil.api.controllers.v2.config import reload_config
 from surveil.api.controllers.v2.config import services
 from surveil.api.controllers.v2.config import timeperiods
@@ -30,9 +31,9 @@ class ConfigController(rest.RestController):
     reload_config = reload_config.ReloadConfigController()
     contacts = contacts.ContactsController()
     timeperiods = timeperiods.TimePeriodsController()
+    realms = realms.RealmsController()
     # hostgroups = HostGroupsController()
     # contactgroups = ContactGroupsController()
     # servicegroups = ServiceGroupsController()
-    # realms = RealmsController()
     # notificationways = NotificationWayController()
     # engine = EngineController()
diff --git a/surveil/api/controllers/v2/config/realms.py b/surveil/api/controllers/v2/config/realms.py
new file mode 100644
index 0000000..ecd71f5
--- /dev/null
+++ b/surveil/api/controllers/v2/config/realms.py
@@ -0,0 +1,62 @@
+# Copyright 2015 - Savoir-Faire Linux 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.
+
+
+import pecan
+from pecan import rest
+import wsmeext.pecan as wsme_pecan
+
+from surveil.api.datamodel.config import realm
+from surveil.api.handlers.config import realm_handler
+
+
+class RealmsController(rest.RestController):
+
+    @wsme_pecan.wsexpose([realm.Realm])
+    def get_all(self):
+        """Returns all realms."""
+        handler = realm_handler.RealmHandler(pecan.request)
+        realms = handler.get_all()
+        return realms
+
+    @wsme_pecan.wsexpose(realm.Realm, unicode)
+    def get_one(self, realm_name):
+        """Returns a specific realm."""
+        handler = realm_handler.RealmHandler(pecan.request)
+        realm = handler.get(realm_name)
+        return realm
+
+    @wsme_pecan.wsexpose(body=realm.Realm, status_code=201)
+    def post(self, data):
+        """Create a new realm.
+
+        :param data: a realm within the request body.
+        """
+        handler = realm_handler.RealmHandler(pecan.request)
+        handler.create(data)
+
+    @wsme_pecan.wsexpose(realm.Realm, unicode, status_code=204)
+    def delete(self, realm_name):
+        """Deletes a specific realm."""
+        handler = realm_handler.RealmHandler(pecan.request)
+        handler.delete(realm_name)
+
+    @wsme_pecan.wsexpose(realm.Realm,
+                         unicode,
+                         body=realm.Realm,
+                         status_code=204)
+    def put(self, realm_name, realm):
+        """Updates a specific realm."""
+        handler = realm_handler.RealmHandler(pecan.request)
+        handler.update(realm_name, realm)
diff --git a/surveil/api/datamodel/config/realm.py b/surveil/api/datamodel/config/realm.py
new file mode 100644
index 0000000..b29ed44
--- /dev/null
+++ b/surveil/api/datamodel/config/realm.py
@@ -0,0 +1,32 @@
+# Copyright 2015 - Savoir-Faire Linux 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.
+
+import wsme
+import wsme.types as wtypes
+
+from surveil.api.datamodel import types
+
+
+class Realm(types.Base):
+    realm_name = wsme.wsattr(wtypes.text, mandatory=True)
+    realm_members = wsme.wsattr(wtypes.text, mandatory=True)
+    default = wsme.wsattr(int, mandatory=True)
+
+    @classmethod
+    def sample(cls):
+        return cls(
+            realm_name='World',
+            realm_members='Europe,America,Asia',
+            default=0
+        )
diff --git a/surveil/api/handlers/config/realm_handler.py b/surveil/api/handlers/config/realm_handler.py
new file mode 100644
index 0000000..7481bd1
--- /dev/null
+++ b/surveil/api/handlers/config/realm_handler.py
@@ -0,0 +1,62 @@
+# Copyright 2014 - Savoir-Faire Linux 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 surveil.api.datamodel.config import realm
+from surveil.api.handlers import handler
+
+
+class RealmHandler(handler.Handler):
+    """Fulfills a request on the realm resource."""
+
+    def get(self, realm_name):
+        """Return a realm."""
+
+        r = self.request.mongo_connection.shinken.realms.find_one(
+            {"realm_name": realm_name}, {'_id': 0}
+        )
+        return realm.Realm(**r)
+
+    def update(self, realm_name, realm):
+        """Modify an existing realm."""
+        realm_dict = realm.as_dict()
+        if "realm_name" not in realm_dict.keys():
+            realm_dict['realm_name'] = realm_name
+
+        self.request.mongo_connection.shinken.realms.update(
+            {"realm_name": realm_name},
+            realm_dict
+        )
+
+    def delete(self, realm_name):
+        """Delete existing realm."""
+        self.request.mongo_connection.shinken.realms.remove(
+            {"realm_name": realm_name}
+        )
+
+    def create(self, realm):
+        """Create a new realm."""
+        self.request.mongo_connection.shinken.realms.insert(
+            realm.as_dict()
+        )
+
+    def get_all(self):
+        """Return all realms."""
+        realms = [c for c
+                  in self.request.mongo_connection.
+                  shinken.realms.find(
+                      {"register": {"$ne": "0"}},  # Don't return templates
+                      {'_id': 0}
+                  )]
+        realms = [realm.Realm(**r) for r in realms]
+        return realms
diff --git a/surveil/tests/api/controllers/v2/config/test_realms.py b/surveil/tests/api/controllers/v2/config/test_realms.py
new file mode 100644
index 0000000..9bb49b1
--- /dev/null
+++ b/surveil/tests/api/controllers/v2/config/test_realms.py
@@ -0,0 +1,104 @@
+# Copyright 2014 - Savoir-Faire Linux 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.
+
+import copy
+import json
+
+
+from surveil.api.datamodel.config import realm
+from surveil.tests.api import functionalTest
+
+
+class TestRealmsController(functionalTest.FunctionalTest):
+
+    def setUp(self):
+        super(TestRealmsController, self).setUp()
+        self.realms = [
+            {
+                'realm_name': 'World',
+                'realm_members': 'Europe,America,Asia',
+                'default': 0
+            },
+            {
+                'realm_name': 'Anti-world',
+                'realm_members': 'void,black-hole',
+                'default': 1
+            },
+        ]
+        self.mongoconnection.shinken.realms.insert(
+            copy.deepcopy(self.realms)
+        )
+
+    def test_get_all_realms(self):
+        response = self.app.get('/v2/config/realms')
+
+        self.assert_count_equal_backport(
+            json.loads(response.body.decode()),
+            self.realms
+        )
+        self.assertEqual(response.status_int, 200)
+
+    def test_get_one_realm(self):
+        response = self.app.get('/v2/config/realms/World')
+
+        self.assertEqual(
+            json.loads(response.body.decode()),
+            self.realms[0]
+        )
+
+    def test_create_realm(self):
+        r = realm.Realm(
+            realm_name='John',
+            realm_members="marie,bob,joe",
+            default=1
+        )
+
+        self.app.post_json('/v2/config/realms', r.as_dict())
+
+        self.assertIsNotNone(
+            self.mongoconnection.shinken.realms.find_one(r.as_dict())
+        )
+
+    def test_delete_realm(self):
+        self.assertIsNotNone(
+            self.mongoconnection.shinken.realms.find_one(self.realms[0])
+        )
+
+        self.app.delete('/v2/config/realms/World')
+
+        self.assertIsNone(
+            self.mongoconnection.shinken.realms.find_one(self.realms[0])
+        )
+
+    def test_put_realm(self):
+        self.assertEqual(
+            self.mongoconnection.shinken.realms.find_one(
+                {'realm_name': 'World'}
+            )['realm_members'],
+            'Europe,America,Asia'
+        )
+
+        self.app.put_json(
+            '/v2/config/realms/World',
+            {"realm_name": "World",
+             "realm_members": "updated",
+             "default": 0}
+        )
+
+        self.assertEqual(
+            self.mongoconnection.shinken.realms.find_one(
+                {'realm_name': 'World'}
+            )['realm_members'],
+            'updated'
+        )