Family name กาญจนวนิช (กาญจนวนิช, Kanjanawenich 
, Karnjanavanich ) , in the world, is a very rare last name. The surname กาญจนวนิช is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Karnjanavanich, Kanjanawenich, Kanjanawanit | Thailand |
Kanjanavanich, Kanjanavanid, Kanjanavanit, Kanjanawanich, Kanvanich, Karnchanavanich, Karnchanavanit, and Karnjanawanit