Cognomen Rattapan (รัฐ 
, Rattapan 
) , in the entire world, is a rare family name. The surname Rattapan is characteristic of Thailand, where it is a rare surname, and India, where it is an extremely rare surname. More frequently, Rattapan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัฐ | Thailand |
| Rattapan | India, Thailand |