FC Heidenheim season the club played in the 3.
Liga, the third tier of German football.
It was the club's fourth season in this league, having been promoted from the Regionalliga in 2009.
The club also took part in the 2012–13 edition of the DFB-Pokal, the German Cup, but was knocked out in the first round by 2.
FC Heidenheim also took part in the 2012–13 edition of the Württemberg Cup, having reached the quarter-finals after a 7–0 win over VfL Mühlheim.