Surname กาญจนวงศา (กาญจนวงศา 
, Kanjanavongsa , Kanchanavongsa ) , all over the world, is a very rare family name. The surname กาญจนวงศา is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| กาญจนวงศา, Kanchanavongsa, Kanchanawongsa, Kanjanavongsa | Thailand |