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