Surname Ги-Ун (Ги-Ун 
) , in all the world, is an extremely rare last name. Much more prevalently, Ги-Ун is the forename as well as the last name. Parts of the name also exists independently as a first name Ги, and a last name Ун.
| VARIANT | COUNTRY |
|---|---|
| Ги-Ун | Kazakhstan |