Surname Ruchittawiwat (Ruchittawiwat 
) , in all the world, is a very rare family name. The family name Ruchittawiwat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruchittawiwat | Thailand |
Sutatta, Sonthaya, Thitaphon, and Yaowaphorn