2003–04 AJ Auxerre season

The 2003–04 season was the 98th season in the existence of AJ Auxerre and the club's 23rd consecutive season in the top flight of French football. In addition to the domestic league, Auxerre participated in this season's editions of the Coupe de France, Coupe de la Ligue, and UEFA Cup. The season covered the period from 1 July 2003 to 30 June 2004.