Family name ไชยยา (Chaiya 
, ไชยยา , Chaiyala ) , worldwide, is quite a common surname. The family name ไชยยา is habitual in Thailand, where it is quite a rare surname, Sweden, where it is a rare surname, and Singapore. Measured by absolute frequency, it is the most numerous in Thailand, India, and Sweden. Also, ไชยยา is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaiya | Sweden, United States, Thailand, Malaysia, India |
| ไชยยา | Thailand |
| Chaiyala | India, Thailand |