Last name 洪鸥 (洪鸥 
) , in the entire world, is a very rare family name. The family name 洪鸥 is characteristic of Eastern Asia, particularly China, where it is an extremely rare surname. More frequently, 洪鸥 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 洪鸥 | China |