Cognomen แก้ง (Kaeng 
, แก้ง) , in all the world, is quite a rare surname. The surname แก้ง is characteristic of Indonesia, where it is a rare surname, Malaysia, where it is a very rare surname, and South Africa. Very seldom, แก้ง is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaeng | Malaysia, Thailand, South Africa, United States, Indonesia |