Cognomen גיא יוסף (גיא יוסף 
) , all over the world, is an extremely rare last name. The family name גיא יוסף is characteristic of Western Asia, particularly Israel, where it is a very rare surname. Predominantly, גיא יוסף is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| גיא יוסף | Israel |