Surname Ruenrenu (Ruenrenu 
) , throughout the world, is a very rare family name. The last name Ruenrenu is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ruenrenu | Thailand |
Orasa, Danaiya, Wanphen, and Thipphawan