Cognomen Румэн (Rumen 
, Roumen 
, Rumens 
) , all around the world, is quite a rare surname. The surname Румэн is characteristic of North Macedonia, where it is quite a rare surname, Netherlands, and Slovenia. Not in comparison with a country's population, it most frequently occurs in Bangladesh, Netherlands, and the United Kingdom. More prevalently, Румэн is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rumen | Greece, Bangladesh, Netherlands, Bulgaria, India |
| Roumen | Greece, Netherlands, Spain, Bulgaria, India |
| Rumens | United Kingdom, Germany, Spain, United States, India |
| Румэн | Russia |