Last name เจษ (Chet 
, Ches 
, เจษ ) , all over the world, is quite a common cognomen. The surname เจษ is habitual in Guatemala, where it is quite a common surname, Malaysia, where it is quite a rare surname, and Taiwan. Measured by absolute frequency, the name is most common in India, Malaysia, and Guatemala. More prevalently, เจษ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Chet | Nepal, United States, India, Guatemala, Malaysia |
| Ches | Thailand, United States, India, Malaysia, Algeria |
| เจษ | Thailand |
จุด, ใจดี, จิรเจษฎา, บุญดาว, and เทียมศรีทอง