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 | France, Spain, Philippines, Indonesia, Argentina |
| Bajon | France, Spain, Philippines, Indonesia, Poland |
| Baen | Spain, Philippines, Indonesia, United States, Mexico |
| Баён | Kazakhstan, Russia, Uzbekistan, Kyrgyzstan |