Cognomen Sengvanh (Sengvanh 
) , all around the world, is an extremely rare family name. The cognomen Sengvanh is habitual in Northern America, particularly the United States, where it is an extremely rare surname. More frequently, Sengvanh is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sengvanh | United States |