Family name จำนงศาสตร์ (จำนงศาสตร์, Jumnongsart 
) , around the world, is a very rare cognomen. The cognomen จำนงศาสตร์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Jumnongsart | Thailand |