Cognomen Сискович (Сискович 
) , in the entire world, is a very rare last name. The surname Сискович is habitual in Eastern Europe, particularly Belarus, where it is a rare surname, Ukraine, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Сискович | Russia, Ukraine, Belarus |
Siskovich, and Siskovitch