Family name รัสสะ (Ratsa 
, รัสสะ , Rassarut ) , around the world, is quite a rare surname. The cognomen รัสสะ is habitual in Georgia, where it is a rare surname, Bulgaria, and India, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in India, Thailand, and Indonesia. Very seldom, รัสสะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratsa | Bulgaria, India, Thailand, Indonesia, Russia |
| รัสสะ, Rassarut | Thailand |