Family name Ильзатжан (Ильзатжан 
) , across the world, is an extremely rare cognomen. The last name Ильзатжан is habitual in Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More frequently, Ильзатжан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ильзатжан | Kyrgyzstan |