Last name 洪虹 (洪虹 
) , in all the world, is a very rare cognomen. The last name 洪虹 is habitual in Eastern Asia, particularly China, where it is an extremely rare surname. More prevalently, 洪虹 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 洪虹 | China |