Cognomen ชัยยะสิทธิ์ (Chaiyasit 
, ชัยยะสิทธิ์ ) , in the entire world, is quite a rare last name. The last name ชัยยะสิทธิ์ is habitual in Thailand, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada. In absolute terms, it is the most numerous in Thailand, the United States, and China. Likewise, ชัยยะสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chaiyasit | Canada, Australia, China, Thailand, United States |
| ชัยยะสิทธิ์ | Thailand |