The 1963–64 season of the European Cup club football tournament saw Inter Milan win the title with a 3–1 victory over Real Madrid. It was the second consecutive season that an Italian team had won the competition.
Milan, the defending champions, were eliminated by Real Madrid in the quarter-finals.
Cyprus entered its champion for the first time this season.
Notes:For the first time in tournament history, only the title holder, Milan, received a bye.
Inter Milan won 1–0 on aggregate.
Monaco won 8–3 on aggregate.
Jeunesse Esch won 5–4 on aggregate.
Partizan won 6–1 on aggregate.
Górnik Zabrze 1–1 Austria Wien on aggregate.
Górnik Zabrze won 2–1 in play-off match.
Dukla Prague won 8–0 on aggregate.
Benfica won 8–3 on aggregate.
Borussia Dortmund won 7–3 on aggregate.
Zürich won 4–2 on aggregate.
Galatasaray won 4–2 on aggregate.
Spartak Plovdiv won 3–2 on aggregate.
PSV Eindoven won 11–4 on aggregate.
Norrköping won 2–1 on aggregate.
Dinamo București won 3–0 on aggregate.
Real Madrid won 7–0 on aggregate.
1 Zürich advanced to the second round over Galatasaray by winning a coin toss, after their play-off match ended 2–2.
Dukla Prague won 4–3 on aggregate.
Borussia Dortmund won 6–2 on aggregate.
Partizan won 7–4 on aggregate.
Inter Milan won 4–1 on aggregate.
PSV Eindhoven won 1–0 on aggregate.
Zürich 2–2 Galatasaray on aggregate.
Zürich 2–2 Galatasaray in play-off match. Zürich qualified on a coin toss.
Real Madrid won 8–4 on aggregate.
Milan won 6–3 on aggregate.
Borussia Dortmund won 5–3 on aggregate.
Inter Milan won 4–1 on aggregate.
Zürich won 3–2 on aggregate.
Real Madrid won 4–3 on aggregate.
Inter Milan won 4–2 on aggregate.
Real Madrid won 8–1 on aggregate.
The top scorers from the 1963–64 European Cup (including preliminary round) are as follows: