Family name รัชตะวัน (Ratchatawan 
, รัชตะวัน , Ratchtawan ) , all over the world, is a very rare last name. The family name รัชตะวัน is habitual in Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. More prevalently, รัชตะวัน is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratchatawan | United States, Thailand |
| รัชตะวัน, Rachtasawan, Ratchtawan | Thailand |