The 2008–09 Montenegrin Cup was the third season of the Montenegrin knockout football tournament. The winner of the tournament received a berth in the second qualifying round of the 2009–10 UEFA Europa League. The defending champions were Mogren, who beat Budućnost in the final of the 2007–08 competition. The competition featured 30 teams. It started on 17 September 2008 and ended with the final on 13 May 2009.