Last name อุตสาห์ (Utsa 
, อุตสาห์ , Utsah 
) , all over the world, is quite a rare surname. The last name อุตสาห์ is characteristic of Thailand, where it is quite a rare surname, Bulgaria, where it is a rare surname, and Bangladesh, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Thailand, Bangladesh, and Nigeria. Likewise, อุตสาห์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Utsa | Bangladesh, Thailand, Singapore, India, Nigeria |
| อุตสาห์ | Thailand |
| Utsah | United States, Thailand, India |