Family name Teosuwan (Teosuwan 
) , in the entire world, is a very rare cognomen. The last name Teosuwan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Teosuwan | Thailand |
Darin, Kultida, Chairoj, Jintana, and Watcharaphon