FC Petrolul Ploiești

Asociația Clubul Sportiv Petrolul 52, commonly referred to as FC Petrolul Ploiești (Romanian pronunciation: [peˈtrolul ploˈjeʃtʲ]), Petrolul Ploiești or simply Petrolul, is a Romanian professional football club based in Ploiești, Prahova County, that competes in the Liga I.

Founded in 1924 in Bucharest as Juventus, through the merger of Triumf and Romcomit, the club won its first league championship in the 1929–30 season. In 1952, it relocated to the industrial city of Ploiești, adopting the name Petrolul in 1957. The club subsequently secured three additional national titles in 1957–58, 1958–59, and 1965–66. Its domestic honours also include three Cupa României titles, the most recent in the 2012–13 season.

Petrolul made its international debut in the 1958–59 season, facing East German side Wismut Karl Marx Stadt in the preliminary round of the European Cup. The club has since totalled 12 editions of European competitions, eight of which were governed by UEFA.

Petrolul's colours are yellow and dark blue, earning players and fans the nickname "the Yellow Wolves". The team plays its home matches at the 15,073-capacity Ilie Oană Stadium, inaugurated in 2011. Its most prominent rivalry is with Rapid București, known as the Primvs derby. Additionally, Petrolul had a short-lived local rivalry with Astra Giurgiu from 1998 until 2012, when Astra relocated from Ploiești.