Cognomen Vanseng (Vanseng 
) , in all the world, is a rare last name. The cognomen Vanseng is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is a very rare surname. Also, Vanseng is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vanseng | Laos, United States, Thailand |