Cognomen Rutchatapaisarn (Rutchatapaisarn 
) , across the world, is a very rare last name. The family name Rutchatapaisarn is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rutchatapaisarn | Thailand |
Karnkawin, Sitthikarn, and Petchnamnueng