Surname Kozmas (Козмас 
, Kozmas 
) , in all the world, is a rare last name. The surname Kozmas is habitual in Eastern Europe, particularly Bulgaria, where it is a rare surname, Slovakia, and Romania. Very seldom, Kozmas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Козмас | Russia, Ukraine |
| Kozmas | Romania, Bulgaria, United States, India, Slovakia |