Cognomen Мася (Masia 
, Masya 
, Masja 
) , all over the world, is a common surname. The last name Мася is habitual in Lesotho, where it is quite a common surname, South Africa, where it is quite a rare surname, and Italy. Much less frequently, Мася is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masia | Indonesia, South Africa, Lesotho, Italy, Spain |
| Masya | Indonesia, South Africa, Kenya, United States, India |
| Masja | Indonesia, South Africa, United States, Denmark, Netherlands |
| Мася | Kazakhstan, Russia, Ukraine |