In the world, Масу (Masu 
, Massu 
, Масу) is a common gender-neutral first name. The first name Масу is habitual in India, where it is a rare unisex name, Nigeria, where it is a rare largely male, but seldom girly name, and Pakistan, where it is a rare male name. Much less frequently, Масу is the last name as well as the forename.