Surname Giley (Giley 
, Гилей 
) , in the entire world, is a very rare last name. The surname Giley is habitual in Kazakhstan, where it is a very rare surname, Russia, and Turkey, where it is an extremely rare surname. In absolute terms, it is the most numerous in Russia, the United States, and Kazakhstan. Also, Giley is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giley | Philippines, India, Turkey, United States, Tanzania |
| Гилей | Kazakhstan, Russia |