Cognomen Thaithan (Thaithan 
) , in all the world, is an extremely rare last name. The cognomen Thaithan is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Thaithan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thaithan | United States, Thailand |