The FC Basel 1912–13 season was their twentieth season since the club's foundation on 15 November 1893. The club's chairman was Ernst-Alfred Thalmann, all together it was his eleventh presidential term and his fifth season in succession. At the AGM Thalmann stood down and Karl Ibach took over. The club announced that to that point it had grown to have over 300 members at over half of them were active football players. FC Basel played their home games in the Landhof in the district Basel-Wettstein in Kleinbasel, Basel.