1976 Montreal Games, 1984 Los Angeles Games, 1988 Seoul Games
Medal count: Four golds, one silver
Louganis' consecutive victories in both the 3-meter springboard and 10-meter platform dives made him the only man to ever sweep both events in back-to-back Olympics. The 1988 games were particularly difficult for Louganis: Six months earlier, he was diagnosed with HIV, and during a preliminary round, he hit his head on the diving board and suffered a concussion. He later became an active LGBT rights advocate.