All over the world, Rizen (Rizen 
, Ризен 
) is a rare epicene first name. The given name Rizen is characteristic of Bulgaria, where it is a rare male name, the Democratic Republic of the Congo, where it is a rare feminine name, and Philippines, where it is a very rare unisex name. Measured by absolute frequency, it is the most numerous in the Democratic Republic of the Congo, Indonesia, and Philippines. Likewise, Rizen is the last name as well as the forename.