In the world, Греян (Греян 
, Greian 
, Grejan 
) is a very rare gender-neutral given name. The forename Греян is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare epicene name. Also, Греян is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Греян | Belarus, Russia, Armenia, Ukraine |
| Greian | Philippines, United States, Israel |
| Grejan | Philippines, Croatia, India, Austria |
| Greyan | Philippines, Armenia, United States, Venezuela, Russia |