Galhyeon-dong () is a dong (neighborhood) of Eunpyeong District, Seoul, South Korea. It is divided into two sub-districts, Galhyeon 1-dong and Galhyeon 2-dong. The northern boundary is Jingwan-dong, while Bulgwang-dong lies to the east. To the south, it shares borders with Gusan-dong and Daejo-dong, and to the west lies Changneung-dong in Goyang-si, Gyeonggi-do. As of May 2017, Galhyeon-dong spans an area of 1.93km2 and has a registered resident population of 56,047, with 25,550 residing in Galhyeon 1-dong and 30,497 in Galhyeon 2-dong.
The name "Galhyeon" originates from the Chinese character "èÂÂå³´", which translates to "Kudzu Pass" or "Galgogae" in Korean. This name was given to the area due to the plentiful presence of arrowroot roots. The Dongguk Yeoji Bigo, a historical record, also refers to this region as "Galgogae".