Surname 穆西 (Musi 
, Mussi 
, Mmusi 
) , all around the world, is a common last name. The last name 穆西 is habitual in Botswana, where it is quite a common surname, Paraguay, and Lesotho. Not in comparison with a country's population, this name is the most popular in Italy, India, and South Africa. Likewise, 穆西 is the forename as well as the last name.