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