Racing Club de Strasbourg Alsace, commonly known as RC Strasbourg (Alemannic German: RC Stroßburg, German: RC Straßburg; RCS) or simply just Racing, is a French professional association football club founded in 1906 and based in the city of Strasbourg, Alsace. It became a professional club in 1933, and is currently playing in Ligue 1, the top tier of French football, having won the 2016–17 Ligue 2 championship. This comes after the club was demoted to the fifth tier of French football at the conclusion of the 2010–11 Championnat National season after going into financial liquidation. Renamed RC Strasbourg Alsace, they won the CFA championship in 2012–13, and became Championnat National champions in 2015–16. Stade de la Meinau has been the club's stadium since 1914.

RC Strasbourg is one of six clubs to have won all three major French trophies: the Championship in 1979; the Coupe de France in 1951, 1966 and 2001; and the Coupe de la Ligue in 1964, 1997, 2005 and 2019. It is also among the six teams to have played more than 2,000 games in France's top flight (spanning 56 seasons) and has taken part in 52 European games since 1961. By contrast, it has also experienced relegation at least once a decade since the early 1950s. It has changed its manager 52 times in 75 years of professional play.

The destiny of the RC Strasbourg has always been wedded to the history of Alsace. Like the region, the club has changed nationality three times and has a troubled history. Founded in what was then a part of the German Empire, the club from the beginning insisted on its Alsatian and popular roots, in opposition to the first Strasbourg-based clubs which came from the German-born bourgeoisie. When Alsace was returned to France in 1919, the club changed its name from 1. FC Neudorf to the current Racing Club de Strasbourg, in imitation of Pierre de Coubertin's Racing Club de France, a clear gesture of francophilia. RC Strasbourg players lived through World War II as most Alsatians did: evacuated in 1939, annexed in 1940 and striving to avoid Nazification and incorporation in the Wehrmacht between 1942 and 1944. When Alsace was definitively returned to France, Strasbourg's identity switched towards Jacobinism with, for example, emotional wins in the cup in 1951 and 1966 amidst Franco-Alsatian controversies.