Cognomen Tuwin (Tuwin 
) , across the world, is a rare family name. The cognomen Tuwin is habitual in South-eastern Asia, particularly Myanmar, where it is a very rare surname, Indonesia, and Malaysia. Also, Tuwin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tuwin | Thailand, Malaysia, Spain, Indonesia, Myanmar |