Fotbal Club FCSB (fet͡ʃeseˌbe), commonly known as FCSB, is a Romanian professional football club based in Bucharest. It has spent its entire history in the top flight of the Romanian league system, the Liga I.
The original Steaua București football team was founded in 1947 and belonged to the Ministry of National Defence, through the namesake CSA Steaua București sports club. In 1998, the football department and its facilities were separated from the latter and taken over by a group of shareholders in a post-Ceaușescu privatisation scheme, allegedly leading to one of the shareholders acquiring full ownership five years later. However, CSA Steaua București has been in conflict with the football club since 2011, claiming that it was a new and separate entity; this resulted in multiple court cases and the forced change of the name from
FC Steaua București to FC FCSB in early 2017.
Domestically, when taken together with the disputed pre-2003 honours, the club has won the Liga I 26 times, Cupa României 24 times, Cupa Ligii two times, and Supercupa României six 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 AC Milan. Throughout their history, the Roș-albaștrii 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.
FCSB's home ground is Arena Națională, having moved here from the Ministry of National Defence-owned Stadionul Ghencea. Initially, the club played in the colours of the Romanian tricolour, but the team became associated with the red and blue scheme after yellow soon lost its importance. Recently, some kits have begun reintegrating the latter colour.
The club has a long-standing grudge against neighbouring Dinamo București, with matches between the two being commonly referred to as the "Eternal derby" or the "Romanian derby".