The 1965–66 season of the European Cup football club tournament was won by Real Madrid, winners of the first five European Cups from 1956 to 1960, for the sixth time in a close final against Partizan. Real Madrid eliminated title-holders Internazionale in the semi-finals.

The 1964–65 European Cup, the 10th season of the football club tournament, was won by Internazionale for the second time in row, in a final match against two-time former champions Benfica, making it three consecutive titles for Italy.