Cognomen រ៉ាណូ (រ៉ាណូ 
) , throughout the world, is an extremely rare surname. The surname រ៉ាណូ is characteristic of South-eastern Asia, particularly Cambodia, where it is a very rare surname. Predominantly, រ៉ាណូ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| រ៉ាណូ | Cambodia |