Yongsan District is one of the 25 districts of Seoul, South Korea.
Yongsan has a population of 313,814 and has a geographic area of 17.6 km², and is divided into 19 dong. Yongsan is located in central Seoul on the northern bank of the Han River, bordering the city districts of Jung to the north, Mapo to the west, Yeongdeungpo and Dongjak to the southwest, Seocho and Gangnam District to the southeast, and Seongdong to the east.