Last name Васиян (Vasiyan 
, Vasijan , Васиян 
) , worldwide, is a very rare cognomen. The cognomen Васиян is characteristic of Russia, where it is a very rare surname, Kazakhstan, and Ukraine, where it is an extremely rare surname. More frequently, Васиян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vasiyan | India, Russia, Malaysia |
| Vasijan | India |
| Васиян | Kazakhstan, Russia, Ukraine |