Family name Sungwian (Sungwian 
) , in the world, is a very rare cognomen. The cognomen Sungwian is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, Sungwian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sungwian | United States, Thailand |