Surname Kamiljan (Камилжан 
, Камильжан , Камилйан ) , worldwide, is a rare family name. The cognomen Kamiljan is habitual in Kyrgyzstan, where it is quite a common surname, and Russia, where it is a very rare surname. More frequently, Kamiljan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Камилжан | Azerbaijan, Kazakhstan, Uzbekistan, Russia, Kyrgyzstan |
| Камильжан | Kyrgyzstan, Kazakhstan, Russia |
| Камилйан | Russia |
| Kamiljan | Turkey, United States |