Worldwide, 兰根 (兰根 
, Langen 
, Langan 
) is quite a rare mostly masculine, but seldom female first name. The given name 兰根 is characteristic of Indonesia, where it is a rare gender-neutral name, China, where it is a very rare principally masculine, but very seldom feminine name, and Tanzania, where it is a very rare male name. Measured by absolute frequency, the name is most common in China, Indonesia, and India. More frequently, 兰根 is the last name as well as the forename.