Cognomen ญานเบญจวงศ์ (ญานเบญจวงศ์ 
) , around the globe, is an extremely rare surname. The surname ญานเบญจวงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| ญานเบญจวงศ์ | Thailand |