In all the world, Kilsun (Kilsun 
) is a very rare epicene forename. The given name Kilsun is habitual in Northern America, particularly the United States, where it is an extremely rare epicene name. Likewise, Kilsun is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Kilsun | China, Philippines, Thailand, United States, India |