The 1963–64 season of the European Cup Winners' Cup club football tournament was won by Sporting CP in a replayed final victory against MTK Budapest.
Bye: Tottenham Hotspur, Motor Zwickau, Linfield
1 Olympiacos beat Zagłębie Sosnowiec 2–0 in a play-off to qualify for the second round.
2 Sporting CP beat Atalanta 3–1 after extra time in a play-off to qualify for the second round.
3 Dinamo Zagreb played LASK in play-off that finished 1–1. Dinamo Zagreb won a coin toss to qualify for the second round.
Barcelona won 5–1 on aggregate.
Hamburger SV won 7–2 on aggregate.
Lyon won 6–2 on aggregate.
2–2 on aggregate.
Manchester United won 7–2 on aggregate.
3–3 on aggregate.
APOEL won 7–0 on aggregate.
Celtic won 10–1 on aggregate.
1–1 on aggregate.
Borough United won 2–0 on aggregate.
Slovan Bratislava won 12–2 on aggregate.
MTK Budapest won 6–2 on aggregate.
Fenerbahçe won 4–2 on aggregate.
1–1 in play-off match. Dinamo Zagreb qualified on a coin toss.
1 Hamburger SV beat Barcelona 3–2 in a play-off to qualify for the quarter-finals.
4–4 on aggregate.
Lyon won 5–3 on aggregate.
Manchester United won 4–3 on aggregate.
Sporting CP won 18–1 on aggregate.
Celtic won 4–2 on aggregate.
Slovan Bratislava won 4–0 on aggregate.
MTK Budapest won 2–1 on aggregate.
Feberbahçe won 4–3 on aggregate.
1 MTK Budapest beat Fenerbahçe 2–0 in a play-off to qualify for the semi-finals.
Lyon won 3–1 on aggregate.
Sporting CP won 6–4 on aggregate.
Celtic won 2–0 on aggregate.
1 Sporting CP beat Lyon 1–0 in a play-off to qualify for the final.
MTK Budapest won 4–3 on aggregate.
The top scorers from the 1963–64 European Cup Winners' Cup (including preliminary round) are as follows: