FCSB, formerly short for Fotbal Club Steaua București and sometimes colloquially known as simply Steaua, is a Romanian professional football club based in Bucharest. Founded in 1947 as Asociația Sportivă a Armatei București, it has spent its complete history in the Liga I, the top tier of the Romanian football league system.
The team was initially part of the CSA Steaua București sports club and belonged to the Romanian Army, however it separated in 1998. The Army sued the football club in 2011 and has since been in a conflict regarding the ownership of the Steaua brand, which resulted in the change of the name to the acronym FCSB in early 2017. Domestically, Roș-albaștrii have won Liga I 26 times, Cupa României 22 times, Cupa Ligii 2 times and Supercupa României 6 times – all competition records. Internationally, they have won the European Cup and European Super Cup, both in 1986. They reached the European Cup final once again in 1989, when they were defeated by A.C. Milan. Throughout its history, Steaua also played the final of the Intercontinental Cup, the quarter-finals of the European Cup Winners' Cup and the semi-finals of the UEFA Cup.