Last name เจริญวรชัย (เจริญวรชัย 
, Charenworachai , Jarernvorachai ) , in the world, is a rare surname. The last name เจริญวรชัย is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Charoenvorachai, Jarernvorachai, เจริญวรชัย, Charenworachai | Thailand |
Chareonworachai, Charoenworachai, Jareanworachai, and Jarernworachai