Cognomen 穆森 (Muson 
, 穆森 , Musone 
) , worldwide, is quite a rare last name. The family name 穆森 is habitual in Italy, where it is quite a rare surname, Lithuania, where it is a rare surname, and Japan. Not in comparison with a country's population, this name is the most popular in Italy, Japan, and Indonesia. Very seldom, 穆森 is the forename as well as the last name.