Last name រុនថៃ (រុនថៃ 
) , across the world, is an extremely rare family name. The family name រុនថៃ is characteristic of South-eastern Asia, particularly Cambodia, where it is a very rare surname. Also, រុនថៃ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| រុនថៃ | Cambodia |