Cognomen 渊鸿 (渊鸿 
) , around the world, is a very rare surname. The last name 渊鸿 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 渊鸿 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 渊鸿 | China |