Surname Susayan (Susayan 
) , all around the world, is a very rare cognomen. The last name Susayan is habitual in South-eastern Asia, particularly Malaysia, where it is a rare surname, Thailand, where it is an extremely rare surname, and Philippines. Very seldom, Susayan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Susayan | Thailand, India, Malaysia, Philippines |