Family name Пилосян (Пилосян 
, Pilosyan 
) , globally, is quite a rare surname. The cognomen Пилосян is characteristic of Armenia, where it is quite a rare surname, Russia, where it is a rare surname, and Belarus. Much less frequently, Пилосян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Пилосян | Russia, Armenia, Ukraine, Belarus |
| Pilosyan | Belarus, Switzerland, Armenia, Germany, Russia |