Surname กุศ (Kutsa 
, กุศ 
) , across the world, is a very rare family name. The surname กุศ is characteristic of Bulgaria, where it is a rare surname, Hungary, and Greece, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Nigeria, Bulgaria, and Hungary. Likewise, กุศ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kutsa | Romania, Hungary, Bulgaria, India, Nigeria |
| กุศ | Thailand |