Cognomen Fung Siong (Fung Siong 
) , globally, is a very rare family name. The family name Fung Siong is habitual in South-eastern Asia, particularly Malaysia, where it is a very rare surname. More frequently, Fung Siong is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fung Siong | Taiwan, Malaysia |