Surname Guyj (Guyj 
) , around the world, is an extremely rare cognomen. The surname Guyj is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Much more prevalently, Guyj is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Guyj | Democratic Republic of the Congo, United States |