Mohun Bagan Super Giant, commonly referred to as Mohun Bagan, is an Indian association football club based in Kolkata, West Bengal. Founded in 1889, it is one of the oldest football clubs in Asia. The club competes in the Indian Super League, the top tier of Indian football league system. The club is most notable for its victory over the East Yorkshire Regiment in the 1911 IFA Shield final. This victory made Mohun Bagan the first all-Indian club to win a championship over a British club and was a major moment during India's push for independence. The club is commonly referred to as Mohun Bagan, and had several sponsored names. In 2020, KGSPL, the company that owned ATK, took an 80% stake in the football division of Mohun Bagan alongside dissolving its own club. This disbanded club was absorbed into the football of Mohun Bagan and Mohun Bagan was rebranded as ATK Mohun Bagan FC. In 2023, the team was rebranded as Mohun Bagan Super Giant after continuous protest from the fans. Till now the club has won the top-flight football league a record six times — National Football League thrice, I-League twice and Indian Super League Shield once. They are one of the most successful Indian clubs in the history of the Federation Cup, having won the championship a record 14 times. The club have also won the 2022–23 ISL Cup. The club had also won several other trophies, including the Durand Cup (17 times), the IFA Shield (22 times), the Rovers Cup (14 times) and the Calcutta Football League (30 times). The club annually contests in Asia's oldest rivalry, the Kolkata Derby against its long-time local rival East Bengal FC, with the first derby match being played on 8 August 1921. Mohun Bagan was one of the founding members of National Football League in 1996, and has never been relegated from the top-tier league of the country. In its 130th year of existence, the club was inducted into the "Club of Pioneers", a network of the oldest existing football clubs around the world, on 29 July 2019.