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 | Mongolia, Malaysia, Egypt, Indonesia, Brunei |
| Aynaa | Philippines, Egypt, Malaysia |
| Айнаа | Russia, Kyrgyzstan, Ukraine |