Cognomen 기완 (기완 
, Giwan 
) , in the entire world, is a rare last name. The cognomen 기완 is habitual in Philippines, where it is a very rare surname, Morocco, and Germany. More prevalently, 기완 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 기완 | South Korea |
| Giwan | Indonesia, Syria, South Korea, Philippines, Iraq |