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