Last name Tchaouchian (Tchaouchian, Чаушьян 
, Чаушян 
) , throughout the world, is a rare family name. The cognomen Tchaouchian is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Russia, and Ukraine, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Чаушьян | Russia, Ukraine |
| Чаушян | Russia, Belarus |