Family name Supuy (Супуй 
, Supuy 
) , all over the world, is an extremely rare cognomen. The surname Supuy is habitual in Latin America and the Caribbean, particularly Costa Rica, where it is a very rare surname. More prevalently, Supuy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Супуй | Russia |
| Supuy | Costa Rica |