Cognomen Айнаа (Ainaa 
, Aynaa 
, Айнаа 
) , around the world, is a rare surname. The surname Айнаа is habitual in Brunei, where it is quite a rare surname, Mongolia, and Malaysia. Not in comparison with a country's population, the name is most common in Malaysia, Mongolia, and Indonesia. Also, Айнаа is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ainaa | Indonesia, Brunei, Egypt, Malaysia, Mongolia |
| Aynaa | Egypt, Malaysia, Philippines |
| Айнаа | Kyrgyzstan, Russia, Ukraine |