Surname Усоян (Усоян 
, Usoian 
) , throughout the world, is a rare family name. The cognomen Усоян is habitual in Georgia, where it is a rare surname, Russia, and Ukraine. Measured by absolute frequency, it is the most numerous in Russia, Ukraine, and Kazakhstan. Also, Усоян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Усоян | Kazakhstan, Russia, Belarus, Armenia, Ukraine |
| Usoian | Georgia, France |
| усоян, аслан рашидович Russian criminal of Kurdish origin (1937-2013), RU (b. 1937) |
|