Football Association of Selangor (Malay: Persatuan Bolasepak Selangor), commonly known as FA Selangor or simply Selangor, is a Malaysian professional football club representing the state of Selangor Darul Ehsan and competes in the Malaysian Super League, the top flight of Malaysian football. Nicknamed "the Red Giants", the club was founded in 1936 and play their home games in the 16,000-capacity MP Selayang Stadium, after moving from Shah Alam Stadium in 2017 due to a financial crisis.
Selangor is the most successful club in Malaysia, in terms of overall titles won. Domestically, Selangor have won a record 33 Malaysia Cups, 7 Malaysia Super League titles, 2 Malaysia Premier League titles, 7 Malaysia FAM League titles, 5 FA Cups, 8 Charity Cups, 4 President Cups, 2 Youth League titles, 7 Malay King's Gold Cup and 1 Agong's Cup. The club is also the first Malaysian team to enter a continental tournament and its final by becoming the runner-up of the 1967 Asian Champion Club Tournament, the first edition of the Asian top-flight continental club tournament, which is later rebranded as the AFC Champions League in 2002. 1997 was the most successful year for Selangor as they won four trophies (Malaysia Cup, FA Cup and Charity Cup) and runner-up for the Agong's Cup under the coaching of Steve Wicks.
P. Maniam is the club's current coach, having been appointed on 8 August 2016 as a caretaker coach, before appointed as the club's official coach for the upcoming 2017 season, after the club's former coach, Zainal Abidin Hassan, was sacked. The club also holds several rivalries, most notably with Singapore and Kuala Lumpur.