Umyeon-dong () is a dong (neighbourhood) of Seocho District, Seoul, South Korea is part of Gangnam District and a well-known, private neighborhood for the wealthy in southern Seoul. It is a legal dong () administered under its administrative dong (), Yangjae 1-dong. The first syllable of the name is derived from Umyeonsan, or Mt. Umyeon due to the geographical feature of the area has the mountain.
The mountain peak of Umyeon-San is located approximately south of Seoul, and about northeast of Gwanaksan. Satelliteviews.net lists the peak elevation as "313", while Google Earth shows the maximum elevation at , within a populated area.
During the 2011 Seoul floods, a landslide on an unstable slope of Mount Umyeon destroyed an apartment row, killing 17 people and may have buried about ten landmines dropped on the mountainsides during the Korean War.