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