Club Sportif Avionnais or simply CS Avion is a French professional football club founded in 1922. They are based in Avion, Pas-de-Calais and are currently competing in the Championnat de France Amateurs 2 Group B, the fifth tier in the French football league system. They play at the Stade François-Blin, which has a capacity of 4,800 spectators. They are a regular participant in the Coupe de France, often appearing in the stages where the professional clubs enter.