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