Family name اولاس (Ulaş 
, Eulas 
, اولاس ) , around the world, is a common last name. The last name اولاس is habitual in Turkey, where it is quite a common surname, Iraq, where it is a rare surname, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in Turkey, Iraq, and China. Also, اولاس is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ulaş | Saudi Arabia, China, United States, Turkey, Iraq |
| Eulas | Brazil, Canada, Argentina, United States, Venezuela |
| اولاس | Iraq |