Surname Riyon (Riyon 
) , throughout the world, is a rare last name. The last name Riyon is characteristic of Bangladesh, where it is a rare surname, Indonesia, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. In absolute terms, it is commonest in Indonesia, Bangladesh, and India. More frequently, Riyon is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riyon | Bangladesh, India, Indonesia, Democratic Republic of the Congo, Japan |