Across the world, Rigen (日根 
, Rigen 
, Киносита 
) is quite a rare dominantly boy's, but infrequently female given name. The first name Rigen is characteristic of the Democratic Republic of the Congo, where it is a rare masculine name, Nepal, and Philippines, where it is a rare gender-neutral name. Measured by absolute frequency, this name is the most popular in China, the Democratic Republic of the Congo, and Philippines. Much less frequently, Rigen is the last name as well as the forename.