diff --git a/openstack/identity/v2/tokens/requests.go b/openstack/identity/v2/tokens/requests.go
index efa054f..356bf87 100644
--- a/openstack/identity/v2/tokens/requests.go
+++ b/openstack/identity/v2/tokens/requests.go
@@ -1,6 +1,10 @@
 package tokens
 
-import "github.com/rackspace/gophercloud"
+import (
+	"fmt"
+
+	"github.com/rackspace/gophercloud"
+)
 
 // AuthOptionsBuilder describes any argument that may be passed to the Create call.
 type AuthOptionsBuilder interface {
@@ -38,20 +42,24 @@
 		return nil, ErrDomainNameProvided
 	}
 
-	// Username and Password are always required.
-	if auth.Username == "" {
-		return nil, ErrUsernameRequired
-	}
-	if auth.Password == "" {
-		return nil, ErrPasswordRequired
-	}
-
 	// Populate the request map.
 	authMap := make(map[string]interface{})
 
-	authMap["passwordCredentials"] = map[string]interface{}{
-		"username": auth.Username,
-		"password": auth.Password,
+	if auth.Username != "" {
+		if auth.Password != "" {
+			authMap["passwordCredentials"] = map[string]interface{}{
+				"username": auth.Username,
+				"password": auth.Password,
+			}
+		} else {
+			return nil, ErrPasswordRequired
+		}
+	} else if auth.Token != "" {
+		authMap["token"] = map[string]interface{}{
+			"id": auth.Token,
+		}
+	} else {
+		return nil, fmt.Errorf("You must provide either username/password or tenantID/token values.")
 	}
 
 	if auth.TenantID != "" {