Surname Ratanayatikul (Ratanayatikul 
) , throughout the world, is a very rare family name. The surname Ratanayatikul is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ratanayatikul | Thailand |
Phunthichar, and Peeraphol