Cognomen สัญวงษ์ (สัญวงษ์ 
, Sanwong 
) , in all the world, is a rare last name. The surname สัญวงษ์ is habitual in Thailand, where it is quite a rare surname, Australia, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is commonest in Thailand, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| สัญวงษ์ | Thailand |
| Sanwong | Australia, United States, Thailand, Canada |