Cognomen Riffan (Riffan 
) , in the entire world, is a rare surname. The family name Riffan is characteristic of Saudi Arabia, where it is a very rare surname, Indonesia, and Brazil, where it is an extremely rare surname. Measured by absolute frequency, it most frequently occurs in Indonesia, Saudi Arabia, and India. More prevalently, Riffan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Riffan | South Africa, Brazil, India, Indonesia, Saudi Arabia |