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