Cognomen Serng (Serng 
) , in all the world, is a rare last name. The family name Serng is characteristic of South-eastern Asia, particularly Malaysia, where it is a rare surname, Singapore, and Thailand, where it is an extremely rare surname. Much less frequently, Serng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Serng | Thailand, Brazil, United States, Singapore, Malaysia |