Seongnam FC is a South Korean professional football club based in Seongnam that competes in the K League 2, the second tier of South Korean football. Founded in 1989 as Ilhwa Chunma Football Club, the club has won seven national league titles, three FA Cups, three League Cups, and two AFC Champions League titles. Seongnam also placed fifth in the IFFHS Asian Clubs of the 20th century.

Seongnam is the fourth largest city in South Korea's Gyeonggi Province after Suwon and the 10th largest city in the country. Its population is approximately one million. Seongnam is a satellite city of Seoul. It is largely a residential city located immediately southeast of Seoul and belongs to the Seoul Capital Area.