Surname ماسو (Masuo 
, Mase 
, Massu ) , all around the world, is a common cognomen. The cognomen ماسو is habitual in Papua New Guinea, where it is quite a rare surname, Botswana, and South Africa. Not in comparison with a country's population, this name is the most popular in India, Pakistan, and Indonesia. Also, ماسو is the forename as well as the last name.