Last name Баён (Bayon 
, Bajon 
, Baen 
) , in all the world, is a common surname. The cognomen Баён is characteristic of Reunion, where it is quite a common surname, Argentina, where it is quite a rare surname, and France. Not in comparison with a country's population, it is commonest in Philippines, France, and Argentina. Very seldom, Баён is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Bayon | Indonesia, Spain, Philippines, Argentina, France |
| Bajon | Indonesia, Spain, Philippines, Poland, France |
| Baen | Indonesia, Spain, Philippines, Mexico, United States |
| Баён | Kyrgyzstan, Uzbekistan, Russia, Kazakhstan |