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