Surname Rataphan (รัตพันธ์ 
, รัตน์พันธ์ , Rataphan 
) , around the globe, is a rare family name. The surname Rataphan is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Rataphan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| รัตน์พันธ์, รัตพันธ์ | Thailand |
| Rataphan | United States, Thailand |