RasenBallsport Leipzig e.V. (lit. ’Lawn Ball Sports Leipzig’), commonly known as RB Leipzig or informally as Red Bull Leipzig, is a German professional football club based in Leipzig, Saxony.
The club was founded in 2009 by the initiative of the company Red Bull GmbH, which purchased the playing rights of fifth-tier side SSV Markranstädt with the intent of advancing the new club to the top-flight Bundesliga within eight years.
The men’s professional football club is run by the spin-off organization RasenBallsport Leipzig GmbH. RB Leipzig plays its home matches at the Red Bull Arena.
 
In its inaugural season in 2009–10, RB Leipzig dominated the NOFV-Oberliga Süd (V) and was promoted as champions to the Regionalliga Nord (IV).
RB Leipzig won the 2012–13 Regionalliga Nordost season without a single defeat and was promoted to the 3.
Liga (III), then finished the 2013–14 3.
Liga season as runners-up and was promoted to the 2.
Bundesliga (II) as the first team since the introduction of the 3.
Liga to win promotion after only one season.