Surname ญาณเจริญ (ญาณเจริญ 
, Yantacharoen , Yanjaroen ) , across the world, is a rare last name. The surname ญาณเจริญ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yantacharoen, ญาณเจริญ, Yanacharoen, Yanjaroen | Thailand |
Yanajareon, Yanajaroen, and Yancharoen