1971–72 FA Cup

The 1971–72 FA Cup was the 91st season of the world's oldest football cup competition, the Football Association Challenge Cup, commonly known as the FA Cup. Leeds United won the competition for the first time, beating holders Arsenal 1–0 in the final at Wembley, London.

Several records were set during this FA Cup season. This was the third year in which the losing semi-finalists were required to compete in a "match for third place"; following a goalless 90 minutes, Birmingham City beat Stoke City in a penalty shootout, the first time this method had been used to determine the result of an FA Cup match.

In the first round proper, Ted MacDougall's nine goals for A.F.C. Bournemouth as they beat Margate 11–0 remains the record for goals scored in a match in the FA Cup proper. The fourth qualifying round tie between Alvechurch and Oxford City became the longest FA Cup tie ever, lasting a total of eleven hours before Alvechurch won the fifth replay 1–0.

Matches were scheduled to be played at the stadium of the team named first on the date specified for each round, which was always a Saturday. If scores were level after 90 minutes had been played, a replay would take place at the stadium of the second-named team later the same week. If the replayed match was drawn further replays would be held until a winner was determined. If scores were level after 90 minutes had been played in a replay, a 30-minute period of extra time would be played.