All around the world, Erren (Erren 
, Irre 
) is a rare epicene forename. The first name Erren is characteristic of Sweden, where it is a rare girly name, Indonesia, where it is a rare unisex name, and Philippines, where it is a very rare unisex name. Not in comparison with a country's population, it is the most numerous in Indonesia, Philippines, and the United States. Likewise, Erren is the last name as well as the forename.