Globally, 朗根 (Langen 
, Langan 
, 朗根 
) is a rare epicene first name. The first name 朗根 is characteristic of Indonesia, where it is a rare unisex name, Tanzania, where it is a very rare boy's name, and France. Measured by absolute frequency, it is commonest in Indonesia, India, and Tanzania. More frequently, 朗根 is the last name as well as the forename.