Family name Sayvong (Sayvong 
) , in all the world, is a very rare surname. The cognomen Sayvong is habitual in Laos, where it is a rare surname, Canada, where it is a very rare surname, and Thailand, where it is an extremely rare surname. In absolute terms, this name is the most popular in Laos, the United States, and Canada. Much less frequently, Sayvong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sayvong | Laos, United States, Thailand, Canada |