Last name Баиан (Baian 
, Баиан 
) , in all the world, is a rare family name. The cognomen Баиан is habitual in Syria, where it is a rare surname, Iraq, and Malaysia, where it is a very rare surname. In absolute terms, it is commonest in Syria, Iraq, and India. More prevalently, Баиан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Baian | Japan, Iraq, Egypt, Saudi Arabia, Syria |
| Баиан | Russia, Kazakhstan |