Cognomen Omcikus (Omcikus 
) , in all the world, is a rare surname. The cognomen Omcikus is habitual in Serbia, where it is quite a rare surname, Slovenia, where it is a rare surname, and Australia, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in Serbia, Germany, and Slovenia. Much less frequently, Omcikus is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Omcikus | Germany, United States, Serbia, Slovenia, China |