Last name Karcauskas (Karcauskas 
) , around the globe, is a very rare family name. The cognomen Karcauskas is habitual in Lithuania, where it is quite a rare surname, Poland, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Karcauskas | Lithuania, United States, Poland |