The 2009–10 KNVB Cup was the 92nd season of the Dutch national football knockout tournament. The competition began on 29 August 2009 with the matches of Round 1 and culminated with a double-leg Final on 25 April and 6 May 2010 respectively. Ajax won the final with a 6–1 on aggregate, winning their record 18th title. The winners of the competition will qualify for the play-off round of the 2010–11 UEFA Europa League.