Cognomen Смаилжан (Смаилжан 
) , around the world, is an extremely rare surname. The last name Смаилжан is characteristic of Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More prevalently, Смаилжан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Смаилжан | Kyrgyzstan, Kazakhstan, Russia |