The Connors–McEnroe rivalry was a tennis rivalry between Jimmy Connors and John McEnroe, who played 34 times between 1977 and 1991. Their head-to-head was 20–14, favoring McEnroe.

The Lendl–McEnroe rivalry was a tennis rivalry between Ivan Lendl and John McEnroe, who met in 36 matches between 1980 and 1992. Their head-to-head is 21–15, favoring Lendl. It is one of the most notable tennis rivalries of the Open Era. Their most memorable match was the 1984 French Open final, when Lendl came from two sets down to win the championship, which McEnroe considered his worst loss.