Gangnam District is one of the 25 districts of Seoul, South Korea. The term Gangnam translates to "South of the [Han] River". Gangnam District is the third largest district in Seoul, with an area of 39.5 km2 (15.3 sq mi). As of the 2017 census, Gangnam District had a population of 561,052. There is a high concentration of wealth in the district, with prices for an apartment as of 2020 nearly double those in the rest of Seoul. Gangnam District is part of Gangnam School District Eight, along with the Seocho District. This district shares half of Gangnam-daero Gangnam Station area with Seocho District, which is one of the most crowded places in South Korea.

Seoul, officially Seoul Special City, is the capital of the Republic of Korea (ROK), commonly known as South Korea, and the country's most extensive urban center. The broader Seoul Capital Area, encompassing Gyeonggi province and Incheon metropolitan city, emerged as the world's fourth largest metropolitan economy in 2014, trailing only Tokyo, New York City, and Los Angeles, hosting more than half of South Korea's population. Although Seoul's population peaked at slightly over 10 million, it has gradually decreased since 2014, standing at approximately 9.97 million residents as of 2020. Seoul is the seat of the South Korean government.