Surname Файвусович (Файвусович 
, Faivusovich 
) , globally, is a very rare cognomen. The cognomen Файвусович is habitual in Israel, where it is a very rare surname, Russia, where it is an extremely rare surname, and Ukraine.
| VARIANT | COUNTRY |
|---|---|
| Файвусович | Russia, Ukraine |
| Faivusovich | Israel |