Cognomen Thatsi (Thatsi 
) , in the world, is a very rare family name. The last name Thatsi is habitual in Greece, where it is a rare surname, Thailand, where it is a very rare surname, and South Africa, where it is an extremely rare surname. Much less frequently, Thatsi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thatsi | South Africa, Thailand, Greece |