The 2013–14 season was the 109th season of competitive association football played by 1. Fußball- und Sportverein Mainz 05, a professional football club based in Mainz, Rhineland-Palatinate, England. The club's 13th-placed finish in 2012–13 meant the club would again compete in the Bundesliga, alongside the DFB-Pokal. The 2013–14 season ran from 1 July 2013 to 30 June 2014.