Surname อุบลศักดิ์ (อุบลศักดิ์ 
, Ubolsak , Ubonsak ) , across the world, is a rare last name. The last name อุบลศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. Very seldom, อุบลศักดิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| อุบลศักดิ์, Ubonsak, Ubolsak | Thailand |