Cognomen Siurkus (Siurkus 
) , throughout the world, is a rare last name. The family name Siurkus is characteristic of 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 |
|---|---|
| Siurkus | Lithuania, United States, Poland |