Family name 길홍 (길홍 
, Kil-Hong, Gilhong 
) , throughout the world, is an extremely rare cognomen. The last name 길홍 is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare surname. Predominantly, 길홍 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 길홍 | South Korea |
| Gilhong | Philippines |