Gwanak District (Gwanak-gu) is an administrative subdivision (gu) of Seoul, South Korea. It lies on the southern skirt of Seoul, bordering Anyang of Gyeonggi Province. The southern border of Gwanak-gu, bordering Anyang, consists of the craggy ridgeline of Gwanaksan, which dominates the local geography.

The Seoul Capital Area or Gyeonggi region, is the metropolitan area of Seoul, Incheon, and Gyeonggi Province, located in north-west South Korea. Its population of 26 million is ranked as the fourth largest metropolitan area in the world. Its area is about 12,685 km2 (4,898 sq mi). It forms the cultural, commercial, financial, industrial, and residential center of South Korea. The largest city is Seoul, with a population of approximately 10 million people, followed by Incheon, with 3 million inhabitants.