Family name Айниддин (Айниддин 
, Ainiddin 
) , throughout the world, is an extremely rare last name. The cognomen Айниддин is habitual in Central Asia, particularly Kyrgyzstan, where it is a very rare surname. More prevalently, Айниддин is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Айниддин | Russia, Kazakhstan, Ukraine, United States, Kyrgyzstan |
| Ainiddin | India |