Surname Ав (Ав 
) , throughout the world, is a very rare last name. The family name Ав is characteristic of Kazakhstan, where it is a very rare surname, Kyrgyzstan, and Russia, where it is an extremely rare surname. More prevalently, Ав is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ав | Kyrgyzstan, Kazakhstan, Ukraine, Russia |