diff --git a/doc/source/command-objects/router.rst b/doc/source/command-objects/router.rst
index 6b8b357b1..9d094d376 100644
--- a/doc/source/command-objects/router.rst
+++ b/doc/source/command-objects/router.rst
@@ -4,6 +4,27 @@ router
 
 Network v2
 
+router add port
+---------------
+Add a port to a router
+
+.. program:: router add port
+.. code:: bash
+
+    os router add port
+        <router>
+        <port>
+
+.. _router_add_port:
+
+.. describe:: <router>
+
+    Router to which port will be added (name or ID)
+
+.. describe:: <port>
+
+    Port to be added (name or ID)
+
 router create
 -------------
 
@@ -16,7 +37,7 @@ Create new router
         [--project <project> [--project-domain <project-domain>]]
         [--enable | --disable]
         [--distributed]
-	[--availability-zone-hint <availability-zone>]
+        [--availability-zone-hint <availability-zone>]
         <name>
 
 .. option:: --project <project>
@@ -146,4 +167,4 @@ Display router details
 .. _router_show-router:
 .. describe:: <router>
 
-    Router to display (name or ID)
+    Router to display (name or ID)
\ No newline at end of file
diff --git a/openstackclient/network/v2/router.py b/openstackclient/network/v2/router.py
index 96aa55b2f..9fcb8bce1 100644
--- a/openstackclient/network/v2/router.py
+++ b/openstackclient/network/v2/router.py
@@ -82,6 +82,30 @@ def _get_attrs(client_manager, parsed_args):
     return attrs
 
 
+class AddPortToRouter(command.Command):
+    """Add a port to a router"""
+
+    def get_parser(self, prog_name):
+        parser = super(AddPortToRouter, self).get_parser(prog_name)
+        parser.add_argument(
+            'router',
+            metavar='<router>',
+            help="Router to which port will be added (name or ID)",
+        )
+        parser.add_argument(
+            'port',
+            metavar='<port>',
+            help="Port to be added (name or ID)",
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        client = self.app.client_manager.network
+        port = client.find_port(parsed_args.port, ignore_missing=False)
+        client.router_add_interface(client.find_router(
+            parsed_args.router, ignore_missing=False), port_id=port.id)
+
+
 class CreateRouter(command.ShowOne):
     """Create a new router"""
 
@@ -318,4 +342,4 @@ class ShowRouter(command.ShowOne):
         obj = client.find_router(parsed_args.router, ignore_missing=False)
         columns = _get_columns(obj)
         data = utils.get_item_properties(obj, columns, formatters=_formatters)
-        return columns, data
+        return columns, data
\ No newline at end of file
diff --git a/openstackclient/tests/network/v2/test_router.py b/openstackclient/tests/network/v2/test_router.py
index 68c225e77..03a00003e 100644
--- a/openstackclient/tests/network/v2/test_router.py
+++ b/openstackclient/tests/network/v2/test_router.py
@@ -29,6 +29,47 @@ class TestRouter(network_fakes.TestNetworkV2):
         self.network = self.app.client_manager.network
 
 
+class TestAddPortToRouter(TestRouter):
+    '''Add port to Router '''
+
+    _port = network_fakes.FakePort.create_one_port()
+    _router = network_fakes.FakeRouter.create_one_router(
+        attrs={'port': _port.id})
+
+    def setUp(self):
+        super(TestAddPortToRouter, self).setUp()
+        self.network.router_add_interface = mock.Mock()
+        self.cmd = router.AddPortToRouter(self.app, self.namespace)
+        self.network.find_router = mock.Mock(return_value=self._router)
+        self.network.find_port = mock.Mock(return_value=self._port)
+
+    def test_add_port_no_option(self):
+        arglist = []
+        verifylist = []
+
+        # Missing required args should bail here
+        self.assertRaises(tests_utils.ParserException, self.check_parser,
+                          self.cmd, arglist, verifylist)
+
+    def test_add_port_required_options(self):
+        arglist = [
+            self._router.id,
+            self._router.port,
+        ]
+        verifylist = [
+            ('router', self._router.id),
+            ('port', self._router.port),
+        ]
+        parsed_args = self.check_parser(self.cmd, arglist, verifylist)
+
+        result = self.cmd.take_action(parsed_args)
+
+        self.network.router_add_interface.assert_called_with(self._router, **{
+            'port_id': self._router.port,
+        })
+        self.assertIsNone(result)
+
+
 class TestCreateRouter(TestRouter):
 
     # The new router created.
diff --git a/releasenotes/notes/router-port-add-0afe7392c080bcb8.yaml b/releasenotes/notes/router-port-add-0afe7392c080bcb8.yaml
new file mode 100644
index 000000000..1e2ee7ed3
--- /dev/null
+++ b/releasenotes/notes/router-port-add-0afe7392c080bcb8.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    Add ``router add port`` command
+    [Bug `1546849 <https://bugs.launchpad.net/bugs/1546849>`_]
diff --git a/setup.cfg b/setup.cfg
index 728b5d646..2fc3f5ce9 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -338,6 +338,7 @@ openstack.network.v2 =
     port_list = openstackclient.network.v2.port:ListPort
     port_show = openstackclient.network.v2.port:ShowPort
 
+    router_add_port = openstackclient.network.v2.router:AddPortToRouter
     router_create = openstackclient.network.v2.router:CreateRouter
     router_delete = openstackclient.network.v2.router:DeleteRouter
     router_list = openstackclient.network.v2.router:ListRouter