Cognomen Athithanrat (Athithanrat 
) , in the world, is a very rare surname. The surname Athithanrat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Athithanrat | Thailand |
Chayuda, Yochanan, Thaphakorn, and Supphapish