FV Illertissen is a German association football club from the town of Illertissen, Bavaria and was established in 1921. Despite its location in Bavaria the club had never played in the league system of its home state but instead preferred to play in neighbouring Baden-Württemberg. At the end of the 2011-12 season the club however decided to switch to Bavaria.

History

Although the town of Illertissen is in Bavaria, its proximity to other towns in the neighbouring state of Baden-Württemberg has allowed it to participate in that state's competition. In 1963, it became the first Bavarian team to win the Württembergischen-Pokal (Württemberg Cup) when they defeated SV Hussenhofen.

The club has played as a lower division side for most of its history. It won promotion to the Landesliga Württemberg I (VI) in 1979 and played there until 1987. After slipping briefly into the Bezirksliga (VII), the club returned to the Landesliga, and in 2003 advanced for the first time to the Verbandsliga.