| Tourney Name: | European Cup |
| Year: | 1969–70 |
| Dates: | 21 August 1969 – 6 May 1970 |
| Num Teams: | 33 |
| Champion Other: | Feyenoord |
| Count: | 1 |
| Second Other: | Celtic |
| Matches: | 63 |
| Goals: | 204 |
| Attendance: | 2046074 |
| Top Scorer: | Mick Jones (Leeds United) 8 goals |
| Prevseason: | 1968–69 |
| Nextseason: | 1970–71 |
The 1969–70 European Cup was the 15th season of the European Cup, a club football tournament organised by UEFA for the domestic league champions of its member associations. It was won by Feyenoord of the Netherlands, who beat Scottish club Celtic after extra time in the final at San Siro in Milan on 6 May 1970. It was the first time the title had been won by a club from the Netherlands, and sparked a period of Dutch dominance in the competition, as Ajax won the next three titles.
For the first time in the European Cup, tiebreaker playoffs were abandoned in favour of the away goals rule; if both teams had scored the same number of away goals, one side was eliminated by the toss of a coin, something that was required in two of the matches (marked on the table below by "c/t").
Milan were the defending champions, but were eliminated by Eventual Champions Feyenoord in the second round.
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Kjøbenhavns Boldklub won 5–0 on aggregate.
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Spartak Trnava won 6–2 on aggregate.----Galatasaray won 5–2 on aggregate.----Legia Warsaw won 10–1 on aggregate.----Saint-Étienne won 3–2 on aggregate.----Vorwärts Berlin won 3–1 on aggregate.----Red Star Belgrade won 12–2 on aggregate.----Milan won 8–0 on aggregate.----Feyenoord won 16–2 on aggregate.----Standard Liège won 4–1 on aggregate.----Real Madrid won 14–1 on aggregate.----Leeds United won 16–0 on aggregate.----Ferencváros won 5–3 on aggregate.----Celtic won 2–0 on aggregate.----Benfica won 5–2 on aggregate.----Dynamo Kyiv won 5–2 on aggregate.----Fiorentina won 3–1 on aggregate.
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1–1 on aggregate; Galatasaray progressed on a coin toss.----Legia Warsaw won 3–1 on aggregate.----4–4 on aggregate; Vorwärts Berlin won on away goals.----Feyenoord won 2–1 on aggregate.----Standard Liège won 4–2 on aggregate.----Leeds United won 6–0 on aggregate.----3–3 on aggregate; Celtic progressed on a coin toss.----Fiorentina won 2–1 on aggregate.
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Legia Warsaw won 3–1 on aggregate.----Feyenoord won 2–1 on aggregate.----Leeds United won 2–0 on aggregate.----Celtic won 3–1 on aggregate.
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Feyenoord won 2–0 on aggregate.----Celtic won 3–1 on aggregate.
See main article: 1970 European Cup final.
The top scorers from the 1969–70 European Cup (excluding preliminary round) are as follows:
