Clubul Sportiv Municipal Jiul Petroșani, commonly known as Jiul Petroșani, simply as Jiul, is a professional football club based in Petroșani, Hunedoara County, founded in 1919 under the name of CAM Petroșani. Jiul Petroșani is one of the oldest active clubs in Romania. Founded before teams such as Steaua București, Dinamo București or Rapid București, Jiul, at its best, was ranked 2nd (1924–25) in the top-flight. For most of its existence, Jiul has been a constant presence in the first two tiers of the Romanian football league system, making it a traditional club in the country. In 1990, the closure of the Jiu Valley mines, the main engine of the local economy, led to the decay of Jiul, annually putting the team in danger of bankruptcy.

Fotbal Club Rapid 1923, commonly known as Rapid București or simply as Rapid, is a Romanian professional football club based in Bucharest, that competes in the Liga I. It was founded in 1923 by employees of the Grivița workshops as the Asociația Culturală și Sportivă CFR.