Nam Mountain is a 262-meter-high peak in the Jung-gu district of south central Seoul, South Korea. Although known as Mongmyeoksan, or 목멱산 / 木覓山 in the past, it is now commonly referred to as Mt. Namsan. It offers some hiking, picnic areas and views of downtown Seoul's skyline. The N Seoul Tower is located on top of Mt. Namsan.
The mountain and its surrounding area is Namsan Park, a public park maintained by the city government, which has panoramic views of Seoul. It is also the location of a smoke signal station called Mongmyeoksan Bongsudae', which was part of an emergency communication system during much of Seoul's history until 1985. From 1925 to 1945 the Shinto shrine known as Chōsen Jingū was situated on Mt. Namsan.
In 2011 a survey was conducted by Seoul Development Institute, which included 800 residents and 103 urban planners and architects. It ranked Mt. Namsan as the most scenic location in Seoul by 62.8 percent of residents and 70.9 percent of the experts surveyed.
The park and the fountain were used as the filming location for Seoul Broadcasting System's drama Lovers in Paris.
Namsan is mentioned in the second verse of South Korea's National Anthem.