Surname Tosawan (Tosawan 
, โตโสวรรณ ) , across the world, is a very rare cognomen. The surname Tosawan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Tosawan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tosawan, โตโสวรรณ | Thailand |