Surname กาญจนสิทธิ์ (Kanchanit 
, กาญจนสิทธิ์ , Kajanasit ) , throughout the world, is a rare cognomen. The family name กาญจนสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More prevalently, กาญจนสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kanchanit | United States, Thailand |
| กาญจนสิทธิ์, Kanjanasit, Kajanasit | Thailand |