Family name Kasmauskas (Kasmauskas 
) , worldwide, is a very rare cognomen. The family name Kasmauskas is habitual in Lithuania, where it is quite a rare surname, the United States, where it is an extremely rare surname, and Russia.
| VARIANT | COUNTRY |
|---|---|
| Kasmauskas | Russia, Lithuania, United States |
| marius kasmauskas Lithuanian handball player, LT (b. 1980) |
|