Surname Силюнас (Siliunas 
, Силюнас 
) , in the entire world, is a rare family name. The surname Силюнас is characteristic of Lithuania, where it is quite a rare surname, Norway, where it is a rare surname, and Russia, where it is a very rare surname. Measured by absolute frequency, this name is the most popular in Lithuania, Russia, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Siliunas | Norway, Lithuania, United States, Argentina, Brazil |
| Силюнас | Russia |