Cognomen 乙鸿 (乙鸿 
) , worldwide, is a very rare surname. The surname 乙鸿 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 乙鸿 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 乙鸿 | China |