Family name Ондашбай (Ондашбай 
) , in all the world, is an extremely rare surname. The cognomen Ондашбай is characteristic of Central Asia, particularly Kazakhstan, where it is a very rare surname. Much more prevalently, Ондашбай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ондашбай | Azerbaijan, Kazakhstan, Russia |