Cognomen ເສງ (ເສງ 
) , throughout the world, is a very rare last name. The cognomen ເສງ is habitual in South-eastern Asia, particularly Laos, where it is a rare surname. More prevalently, ເສງ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ເສງ | Laos |