1965–66 Inter-Cities Fairs Cup

The eighth Inter-Cities Fairs Cup was played over the 1965–66 season. The competition was won by Barcelona over two legs in an all-Spanish final against Zaragoza. It was the sixth and final time that a Spanish side won the competition, and Barcelona's third title.

Second leg
 Porto won 1–0 on aggregate.

Chelsea won 4–1 on aggregate.

RC Strasbourg 2–2 Milan on aggregate.

''Milan 1–1 RC Strasbourg in play-off. Milan advanced on a coin toss.''

Fiorentina won 7–1 on aggregate.

Leeds United won 2–1 on aggregate.

Wiener won 8–2 on aggregate.

Second leg
 Hannover 96 won 6–2 on aggregate.

Steagul Roșu Brașov won 3–2 on aggregate.

Real Zaragoza won 3–2 on aggregate.

Leeds won 2–1 on aggregate.

Milan 2–2 GD CUF on aggregate.

Milan won 1–0 in play-off.

Spartak Brno won 4–2 on aggregate.

Valencia won 8–2 on aggregate.

Second leg
Steagul Roșu 5–5 Espanyol on aggregate.

Chelsea 3–3 Milan on aggregate.

''Milan 1–1 Chelsea in play-off. Chelsea advanced on a coin toss.''

Leeds won 2–1 on aggregate.

Quarter-finals

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Second leg
Leeds won 5–2 on aggregate.

Second leg
''Leeds – Zaragoza 2–2 on aggregate, replay is needed. Leeds won toss to play at home''

Zaragoza won 5–3 on aggregate.

''Chelsea – Barcelona 2–2 on aggregate, replay is needed. Barcelona won toss to play at home''

Barcelona won 7–2 on aggregate.

Final

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