Cognomen 凯宇 (凯宇 
) , around the world, is quite a rare family name. The cognomen 凯宇 is habitual in Eastern Asia, particularly China, where it is a very rare surname. More prevalently, 凯宇 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 凯宇 | China |