All over the world, マスヤ (マスヤ 
, Masuya 
) is a rare epicene forename. The forename マスヤ is habitual in Tanzania, where it is a very rare masculine name, India, where it is an extremely rare epicene name, and China, where it is an extremely rare male name. Much less frequently, マスヤ is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| マスヤ | Japan |
| Masuya | Japan, China, Indonesia, Tanzania, India |