Cognomen Sunjan (Sunjan 
) , all around the world, is a very rare family name. The surname Sunjan is habitual in Thailand, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and India. Much more frequently, Sunjan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sunjan | Malaysia, United States, Thailand, India |