LOSC Lille (Lille Olympique Sporting Club) was founded in 1944 through the merger of two local clubs, Olympique Lillois and SC Fives. The new side quickly adopted the nickname Les Dogues ("The Mastiffs"), reflecting the fighting spirit of the breed, along with the red-and-white colours the club still wears today.
Lille claimed the French championship in its early years, in 1946 and 1954, and won the Coupe de France on several occasions. After decades without major honours, the club returned to the top of French football in 2010/11, when manager Rudi Garcia guided the team to a historic double, winning both Ligue 1 and the Coupe de France in the same season. Lille is also known for its youth academy, which produced Eden Hazard, one of the finest players of his generation.
The club's most memorable modern achievement came in 2020/21, when, under coach Christophe Galtier, Lille unexpectedly overtook Paris Saint-Germain to win its fourth Ligue 1 title. The triumph earned Lille a place in the UEFA Champions League, where the club competed successfully against sides such as Chelsea and Sevilla.
Lille play their home matches at the Stade Pierre-Mauroy, named after the city's long-serving mayor and former French prime minister Pierre Mauroy. Opened in 2012, it remains one of the most modern football venues in France.