Surname อัจ (At 
, อัจ 
) , globally, is a common last name. The cognomen อัจ is characteristic of Libya, where it is quite a common surname, Lebanon, and Syria. Not in comparison with a country's population, it is the most numerous in Indonesia, Myanmar, and Morocco. Also, อัจ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| At | Indonesia, Saudi Arabia, Morocco, Egypt, Myanmar |
| อัจ | Thailand |