Cognomen Пилоян (Пилоян 
, Piloyan 
, Piloian 
) , in all the world, is quite a rare last name. The last name Пилоян is characteristic of Armenia, where it is quite a rare surname, Georgia, and Russia, where it is a rare surname. Also, Пилоян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Пилоян | Kazakhstan, Armenia, Russia, Belarus, Ukraine |
| Piloyan | Armenia, Russia, Mexico, United States, Greece |
| Piloian | Lithuania, Georgia, United States |