Surname Исмайлжан (Исмайлжан 
) , worldwide, is an extremely rare family name. The surname Исмайлжан is habitual in Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More frequently, Исмайлжан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Исмайлжан | Kyrgyzstan, Kazakhstan |