diff --git a/openstack/network/v2/port.py b/openstack/network/v2/port.py
index 1356df49d..40f8fa4ab 100644
--- a/openstack/network/v2/port.py
+++ b/openstack/network/v2/port.py
@@ -79,6 +79,8 @@ class Port(resource.Resource, tag.TagMixin):
     device_owner = resource.Body('device_owner')
     #: DNS assignment for the port.
     dns_assignment = resource.Body('dns_assignment')
+    #: DNS domain assigned to the port.
+    dns_domain = resource.Body('dns_domain')
     #: DNS name for the port.
     dns_name = resource.Body('dns_name')
     #: Extra DHCP options.
diff --git a/openstack/tests/unit/network/v2/test_port.py b/openstack/tests/unit/network/v2/test_port.py
index 2bfbcdac3..6270ff811 100644
--- a/openstack/tests/unit/network/v2/test_port.py
+++ b/openstack/tests/unit/network/v2/test_port.py
@@ -29,6 +29,7 @@ EXAMPLE = {
     'device_id': '9',
     'device_owner': '10',
     'dns_assignment': [{'11': 11}],
+    'dns_domain': 'a11',
     'dns_name': '12',
     'extra_dhcp_opts': [{'13': 13}],
     'fixed_ips': [{'14': '14'}],
@@ -110,6 +111,7 @@ class TestPort(testtools.TestCase):
         self.assertEqual(EXAMPLE['device_id'], sot.device_id)
         self.assertEqual(EXAMPLE['device_owner'], sot.device_owner)
         self.assertEqual(EXAMPLE['dns_assignment'], sot.dns_assignment)
+        self.assertEqual(EXAMPLE['dns_domain'], sot.dns_domain)
         self.assertEqual(EXAMPLE['dns_name'], sot.dns_name)
         self.assertEqual(EXAMPLE['extra_dhcp_opts'], sot.extra_dhcp_opts)
         self.assertEqual(EXAMPLE['fixed_ips'], sot.fixed_ips)
diff --git a/releasenotes/notes/add-dns-domain-support-for-port-3fa4568330dda07e.yaml b/releasenotes/notes/add-dns-domain-support-for-port-3fa4568330dda07e.yaml
new file mode 100644
index 000000000..7c24608b4
--- /dev/null
+++ b/releasenotes/notes/add-dns-domain-support-for-port-3fa4568330dda07e.yaml
@@ -0,0 +1,5 @@
+---
+features:
+  - |
+    ``dns_domain`` attribute support has been added to the network
+    port resource