Family name Њилыбай (Њилыбай 
) , across the world, is a very rare last name. The family name Њилыбай is characteristic of Central Asia, particularly Kazakhstan, where it is a rare surname. Very seldom, Њилыбай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Њилыбай | Kazakhstan |