Cognomen Vuljan (Vuljan 
) , across the world, is a rare surname. The cognomen Vuljan is habitual in Croatia, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Vuljan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vuljan | United States, India, Croatia |