Around the globe, Rioo (Rioo 
) is a rare masculine forename. The given name Rioo is habitual in Indonesia, where it is a very rare boy's name, Saudi Arabia, and India, where it is an extremely rare male name. More prevalently, Rioo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Rioo | Japan, Indonesia, Saudi Arabia, Egypt, Myanmar |