Last name ญาณวงศ์ (ญาณวงศ์ 
, Janyawong ) , around the world, is a very rare cognomen. The surname ญาณวงศ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ญาณวงศ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ญาณวงศ์, Janyawong | Thailand |