Surname Mussu (Muso 
, Mussu 
) , in all the world, is quite a rare cognomen. The surname Mussu is habitual in Lesotho, where it is quite a common surname, North Macedonia, where it is quite a rare surname, and Albania. Not in comparison with a country's population, it is commonest in Lesotho, Indonesia, and Thailand. Likewise, Mussu is the forename as well as the last name.