Last name ムン (Mun 
, ムン 
) , throughout the world, is a widespread family name. The cognomen ムン is habitual in South-eastern Asia, particularly Malaysia, where it is a common surname, Singapore, where it is quite a common surname, and Myanmar. Measured by absolute frequency, it is the most numerous in Malaysia, India, and Myanmar. Much less frequently, ムン is the forename as well as the last name.