Cognomen Gioy (Gioy 
) , in the world, is a very rare family name. The family name Gioy is habitual in Italy, where it is a very rare surname, Argentina, and Philippines, where it is an extremely rare surname. Likewise, Gioy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gioy | Brazil, Argentina, United States, Philippines, Italy |