Family name Giya (Giya 
, Гия 
, Gear 
) , in the world, is quite a common surname. The surname Giya is habitual in Isle of Man, where it is quite a rare surname, New Zealand, and Australia. Measured by absolute frequency, it most frequently occurs in the United States, the United Kingdom, and Indonesia. Likewise, Giya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Giya | Philippines, India, Indonesia, Ethiopia, Japan |
| Гия | Kazakhstan, Belarus, Russia, Armenia, Kyrgyzstan |
| Gear | Australia, United Kingdom, United States, India, Indonesia |
| Guía | Paraguay, Argentina, Spain, United States, Mexico |