Last name Масто (Масто 
) , across the world, is a very rare family name. The last name Масто is habitual in Eastern Europe, particularly Ukraine, where it is a very rare surname, and Russia, where it is an extremely rare surname. Very seldom, Масто is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Масто | Ukraine, Russia |