Family name Guuy (Guuy 
) , throughout the world, is a very rare cognomen. The surname Guuy is characteristic of Malaysia, where it is a very rare surname, New Zealand, and China, where it is an extremely rare surname. Very seldom, Guuy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guuy | France, New Zealand, United States, Malaysia, China |