diff --git a/openstack/db/v1/instances/fixtures.go b/openstack/db/v1/instances/fixtures.go
index 16b4006..9cbcb3a 100644
--- a/openstack/db/v1/instances/fixtures.go
+++ b/openstack/db/v1/instances/fixtures.go
@@ -154,3 +154,13 @@
 		w.WriteHeader(http.StatusAccepted)
 	})
 }
+
+func HandleEnableRootUserSuccessfully(t *testing.T, id string) {
+	th.Mux.HandleFunc("/instances/"+id+"/root", func(w http.ResponseWriter, r *http.Request) {
+		th.TestMethod(t, r, "POST")
+		th.TestHeader(t, r, "X-Auth-Token", fake.TokenID)
+
+		w.WriteHeader(http.StatusOK)
+		fmt.Fprintf(w, `{"user":{"name":"root","password":"secretsecret"}}`)
+	})
+}
diff --git a/openstack/db/v1/instances/requests.go b/openstack/db/v1/instances/requests.go
index 6fe423b..b54b9fa 100644
--- a/openstack/db/v1/instances/requests.go
+++ b/openstack/db/v1/instances/requests.go
@@ -226,3 +226,18 @@
 
 	return res
 }
+
+func EnableRootUser(client *gophercloud.ServiceClient, id string) UserRootResult {
+	var res UserRootResult
+
+	resp, err := perigee.Request("POST", userRootURL(client, id), perigee.Options{
+		MoreHeaders: client.AuthenticatedHeaders(),
+		Results:     &res.Body,
+		OkCodes:     []int{200},
+	})
+
+	res.Header = resp.HttpResponse.Header
+	res.Err = err
+
+	return res
+}
diff --git a/openstack/db/v1/instances/requests_test.go b/openstack/db/v1/instances/requests_test.go
index 5e5dcaa..0845e0c 100644
--- a/openstack/db/v1/instances/requests_test.go
+++ b/openstack/db/v1/instances/requests_test.go
@@ -130,3 +130,16 @@
 	res := Delete(fake.ServiceClient(), instanceID)
 	th.AssertNoErr(t, res.Err)
 }
+
+func TestEnableRootUser(t *testing.T) {
+	th.SetupHTTP()
+	defer th.TeardownHTTP()
+
+	HandleEnableRootUserSuccessfully(t, instanceID)
+
+	expected := &User{Name: "root", Password: "secretsecret"}
+
+	user, err := EnableRootUser(fake.ServiceClient(), instanceID).Extract()
+	th.AssertNoErr(t, err)
+	th.AssertDeepEquals(t, expected, user)
+}
diff --git a/openstack/db/v1/instances/results.go b/openstack/db/v1/instances/results.go
index d2ea794..60f0c04 100644
--- a/openstack/db/v1/instances/results.go
+++ b/openstack/db/v1/instances/results.go
@@ -27,6 +27,11 @@
 	Volume   Volume
 }
 
+type User struct {
+	Name     string
+	Password string
+}
+
 type commonResult struct {
 	gophercloud.Result
 }
@@ -95,3 +100,21 @@
 
 	return response.Instances, err
 }
+
+type UserRootResult struct {
+	gophercloud.Result
+}
+
+func (r UserRootResult) Extract() (*User, error) {
+	if r.Err != nil {
+		return nil, r.Err
+	}
+
+	var response struct {
+		User User `mapstructure:"user"`
+	}
+
+	err := mapstructure.Decode(r.Body, &response)
+
+	return &response.User, err
+}
diff --git a/openstack/db/v1/instances/urls.go b/openstack/db/v1/instances/urls.go
index d30e762..a50da96 100644
--- a/openstack/db/v1/instances/urls.go
+++ b/openstack/db/v1/instances/urls.go
@@ -9,3 +9,7 @@
 func resourceURL(c *gophercloud.ServiceClient, id string) string {
 	return c.ServiceURL("instances", id)
 }
+
+func userRootURL(c *gophercloud.ServiceClient, id string) string {
+	return c.ServiceURL("instances", id, "root")
+}