2005–06 Lille OSC season

The 2005–06 season was the 62nd season in the existence of Lille OSC and the club's 6th consecutive season in the top flight of French football. In addition to the domestic league, Lille participated in this season's edition of the Coupe de France, the Coupe de la Ligue, the UEFA Champions League, and the UEFA Cup. The season covered the period from 1 July 2005 to 30 June 2006.