Cognomen Yboyan (Yboyan 
, Ибоиан 
) , across the world, is a very rare last name. The surname Yboyan is characteristic of Eastern Europe, particularly Russia, where it is a very rare surname. Much less frequently, Yboyan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Yboyan | Philippines |
| Ибоиан | Russia |