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