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