The 1985–86 FA Cup was the 105th season of the world's oldest knockout football competition, The Football Association Challenge Cup, or FA Cup. The competition was won by Liverpool, who defeated local rivals Everton 3–1 at Wembley in the first ever Merseyside derby final. Liverpool thus became only the fifth club to win the league and FA Cup double.
Teams from the Football League First and Second Division entered in this round. Most of the third round of games in the FA Cup were played over the weekend 4–6 January 1986. Various matches and replays were played as late as 16 January, however.
The fifth set of games were intended to be played on 15 February 1986, but due to bad weather, and an amazing 8 replays over the 8 ties, some of these ties were not concluded until just under a month later. Holders Manchester United were eliminated by West Ham United.
The sixth round of FA Cup games were played either at the weekend on 8 March or midweek on 11-12 1986. Replays were played in the following midweek fixture.
