All around the world, Riolo (Riolo 
) is a rare masculine forename. The forename Riolo is characteristic of Angola, where it is a rare boy's name, Italy, where it is a rare principally boy's, but very seldom female name, and Philippines, where it is a very rare masculine name. Much more prevalently, Riolo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Riolo | Italy, Indonesia, Philippines, United States, Argentina |