Cognomen Treng (Treng 
) , all around the world, is a rare family name. The surname Treng is habitual in Cambodia, where it is a very rare surname, Indonesia, and Canada, where it is an extremely rare surname. Measured by absolute frequency, it is commonest in Indonesia, Nigeria, and China. Also, Treng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Treng | United States, Indonesia, Nigeria, Malaysia, China |