Cognomen Giaya (Giaya 
) , in the world, is a very rare surname. The cognomen Giaya is habitual in France, where it is a very rare surname, Philippines, where it is an extremely rare surname, and the United States. Much less frequently, Giaya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giaya | Philippines, India, United States, France |