FC Petrolul Ploiești

Asociația Clubul Sportiv Petrolul 52, commonly known as FC Petrolul Ploiești (Romanian pronunciation: [peˈtrolul ploˈjeʃtʲ]), Petrolul Ploiești, or simply Petrolul, is a Romanian professional football club based in Ploiești, Prahova County. It competes in the Liga I, the top tier of the Romanian league system.

The team was founded in 1924 in Bucharest as Juventus, following the merger of Triumf and Romcomit, and won its first national championship in the 1929–30 season. In 1952, it relocated to the industrial city of Ploiești, and adopted the name Petrolul five years later. During this period, the club enjoyed its most successful era, securing three further league titles in 1957–58, 1958–59, and 1965–66. Petrolul Ploiești has also won the Cupa României on three occasions, most recently in the 2012–13 season.

The team made its European debut in the 1958–59 season, facing East German side Wismut Karl Marx Stadt in the preliminary round of the European Cup. Overall, it has participated in 12 European campaigns, eight of which were organised by UEFA.

Petrolul Ploiești's traditional colours are yellow and dark blue, a combination that has earned its players and supporters the nickname "the Yellow Wolves". It plays its home matches at the 15,073-seat Ilie Oană Stadium, which was inaugurated in 2011. Its principal rivalry is with Rapid București, a fixture known as the Primvs derby. The club also shared a short-lived local rivalry with Astra Giurgiu between 1998 and 2012, during the period in which Astra was based in Ploiești.