Cognomen Mujen (Mujen 
) , all around the world, is a rare last name. The cognomen Mujen is characteristic of Taiwan, where it is quite a rare surname, Malaysia, where it is a very rare surname, and Nigeria, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Taiwan, India, and Malaysia. Very seldom, Mujen is the forename as well as the last name.