Family name ريجين (Rejane 
, Regen 
, ريجين 
) , around the world, is quite a rare last name. The last name ريجين is habitual in North Macedonia, where it is a rare surname, Austria, and Slovenia. Not in comparison with a country's population, it is commonest in Indonesia, the United States, and Brazil. Much more prevalently, ريجين is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rejane | France, Philippines, Democratic Republic of the Congo, Brazil, United States |
| Regen | Germany, Indonesia, Philippines, Brazil, United States |
| ريجين | Iraq |
| Reigen | Japan, Indonesia, India, Philippines, United States |