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.

Dinamo Zagreb won a coin toss to qualify for the second round.

1 Hamburger SV beat Barcelona 3–2 in a play-off to qualify for the quarter-finals.

1 MTK Budapest beat Fenerbahçe 2–0 in a play-off to qualify for the semi-finals.

1 Sporting CP beat Lyon 1–0 in a play-off to qualify for the final.