Cognomen Rinjan (Rinjan 
) , throughout the world, is a very rare family name. The surname Rinjan is characteristic of Thailand, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and India. More prevalently, Rinjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rinjan | Thailand, India, Malaysia, Philippines |