diff --git a/storage/google/cloud/storage/hmac_key.py b/storage/google/cloud/storage/hmac_key.py
index 257719ca80d0..09075896fcb2 100644
--- a/storage/google/cloud/storage/hmac_key.py
+++ b/storage/google/cloud/storage/hmac_key.py
@@ -63,7 +63,7 @@ def __hash__(self):
 
     @property
     def access_id(self):
-        """ID of the key.
+        """Access ID of the key.
 
         :rtype: str or None
         :returns: unique identifier of the key within a project.
@@ -79,6 +79,15 @@ def etag(self):
         """
         return self._properties.get("etag")
 
+    @property
+    def id(self):
+        """ID of the key, including the Project ID and the Access ID.
+
+        :rtype: str or None
+        :returns: ID of the key.
+        """
+        return self._properties.get("id")
+
     @property
     def project(self):
         """Project ID associated with the key.
diff --git a/storage/tests/unit/test_hmac_key.py b/storage/tests/unit/test_hmac_key.py
index ecee7d9865a2..399a82682a64 100644
--- a/storage/tests/unit/test_hmac_key.py
+++ b/storage/tests/unit/test_hmac_key.py
@@ -36,6 +36,7 @@ def test_ctor_defaults(self):
         self.assertEqual(metadata._properties, {})
         self.assertIsNone(metadata.access_id)
         self.assertIsNone(metadata.etag)
+        self.assertIsNone(metadata.id)
         self.assertIsNone(metadata.project)
         self.assertIsNone(metadata.service_account_email)
         self.assertIsNone(metadata.state)
@@ -52,6 +53,7 @@ def test_ctor_explicit(self):
         self.assertEqual(metadata._properties, expected)
         self.assertEqual(metadata.access_id, ACCESS_ID)
         self.assertIsNone(metadata.etag)
+        self.assertIsNone(metadata.id)
         self.assertEqual(metadata.project, OTHER_PROJECT)
         self.assertIsNone(metadata.service_account_email)
         self.assertIsNone(metadata.state)
@@ -104,6 +106,12 @@ def test_etag_getter(self):
         metadata._properties["etag"] = expected
         self.assertEqual(metadata.etag, expected)
 
+    def test_id_getter(self):
+        metadata = self._make_one()
+        expected = "ID"
+        metadata._properties["id"] = expected
+        self.assertEqual(metadata.id, expected)
+
     def test_project_getter(self):
         metadata = self._make_one()
         expected = "PROJECT-ID"