Family name Fosy (Fosy 
) , all over the world, is an extremely rare surname. The surname Fosy is habitual in Honduras, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Nigeria. More prevalently, Fosy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fosy | South Africa, Venezuela, India, Nigeria, Malaysia |