The 1970–71 season of the European Cup Winners' Cup football club tournament was won by Chelsea in a replay against Real Madrid.

Defending champions Manchester City were eliminated by Chelsea in the semi-finals, only the second ever tie in the competition between two clubs from the same country.

These two sides would later compete in the 2021 UEFA Champions League final, with Chelsea winning 1-0.

The final was played in Karaiskakis Stadium in Piraeus, Greece.

1–1 on aggregate; Vorwärts Berlin won on away goals.