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 | Spain, Lesotho, South Africa, Indonesia, Italy |
| Masya | Kenya, India, South Africa, United States, Indonesia |
| Masja | Netherlands, South Africa, United States, Denmark, Indonesia |
| Мася | Russia, Kazakhstan, Ukraine |