The 1973–74 season of the European Cup football club tournament was won for the first time by Bayern Munich, beginning their own three-year period of domination, in a replayed final against Atlético Madrid, the only such occasion in the tournament's final. This was the first time the cup went to Germany, and the only European Cup final to require a replay after the first match was drawn 1–1 after extra time. Ajax, the three-time defending champions, were eliminated by CSKA September Flag in the second round.

Teams

Bracket

First round

First leg

Second leg

Spartak Trnava won 3–1 on aggregate. Zorya Voroshilovgrad won 3–0 on aggregate. Benfica won 2–0 on aggregate. Újpesti Dózsa won 6–2 on aggregate. 4–4 on aggregate; Bayern Munich won on penalties. Dynamo Dresden won 4–3 on aggregate. CSKA September Flag won 4–0 on aggregate. Club Brugge won 10–0 on aggregate. Basel won 11–2 on aggregate. Celtic won 9–1 on aggregate. Vejle won 3–2 on aggregate. Red Star Belgrade won 3–1 on aggregate. Liverpool won 3–1 on aggregate. Dinamo București won 12–0 on aggregate. Atletico Madrid won 1–0 on aggregate.

Second round

First leg

Second leg

Spartak Trnava won 1–0 on aggregate. Újpesti Dózsa won 3–1 on aggregate. Bayern Munich won 7–6 on aggregate. CSKA September Flag won 2–1 on aggregate. Basel won 7–6 on aggregate. Celtic won 1–0 on aggregate. Red Star Belgrade won 4–2 on aggregate. Atlético Madrid won 4–2 on aggregate.

Quarter-finals

First leg

Second leg

2–2 on aggregate; Újpesti Dózsa won on penalties. Bayern Munich won 5–3 on aggregate. Celtic won 6–5 on aggregate. Atlético Madrid won 2–0 on aggregate.

Semi-finals

First leg

Second leg

Bayern Munich won 4–1 on aggregate Atlético Madrid won 2–0 on aggregate

Final

Replay

Top scorers