Cognomen Rujisarin (Rujisarin 
) , worldwide, is a very rare family name. The last name Rujisarin is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rujisarin | Thailand |
Papon, Napat, Siriporn, Natthakorn, and Thanakritta