Family name Masain (Masain 
) , in all the world, is a rare last name. The family name Masain is characteristic of Malaysia, where it is a rare surname, India, where it is an extremely rare surname, and Philippines. Likewise, Masain is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Masain | Japan, Indonesia, Spain, Malaysia, India |