1989–90 European Cup

The 1989–90 European Cup was the 35th edition of Europe's premier club football tournament, the European Cup. The final was played at the Praterstadion in Vienna on 23 May 1990. The final was contested by Italian defending champions Milan and Portuguese two-time former winners Benfica. Milan successfully defended their title with a 1–0 victory, securing their fourth European Cup trophy. Milan remained the last team to successfully defend their trophy until Real Madrid did it again in 2017. Arsenal were denied a place in the competition, as this was the last year of a ban from European competitions for English clubs following the Heysel Stadium disaster of 1985.

First round

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First leg
Due to fan incidents at the match, Sparta Prague were punished with a stadium ban, being ordered to play their next European home match at least 300 km from Prague.

Second leg
Malmö FF won 2–1 on aggregate.

Mechelen won 5–0 on aggregate.

Milan won 5–0 on aggregate.

Real Madrid won 9–0 on aggregate.

Bayern Münich won 3–1 on aggregate.

17 Nëntori won 5–1 on aggregate.

Steaua București won 5–0 on aggregate.

PSV Eindhoven won 5–0 on aggregate.

Sparta Prague won 5–2 on aggregate.

CSKA Sofia won 6–2 on aggregate.

Marseille won 4–1 on aggregate.

AEK Athens won 5–4 on aggregate.

2–2 on aggregate; Budapesti Honvéd won on away goals.

Benfica won 6–1 on aggregate.

Dnipro Dnipropetrovsk won 3–1 on aggregate.

Swarovski Tirol won 9–2 on aggregate.

Second round

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Second leg
Mechelen won 4–1 on aggregate.

Milan won 2–1 on aggregate.

Bayern Münich won 6–1 on aggregate.

PSV Eindhoven won 5–2 on aggregate.

CSKA Sofia won 5–2 on aggregate.

Marseille won 3–1 on aggregate.

Benfica won 9–0 on aggregate.

Dnipro Dnipropetrovsk won 4–2 on aggregate.

Quarter-finals

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Second leg
Milan won 2–0 on aggregate.

Bayern Münich won 3–1 on aggregate.

Marseille won 4–1 on aggregate.

Benfica won 4–0 on aggregate.

Semi-finals

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Second leg
2–2 on aggregate; Milan won on away goals.

2–2 on aggregate; Benfica won on away goals.