Frank Heckl (born c. 1950) is an American former competition swimmer, seven-time Pan American Games medalist, and former world record-holder in two relay events. At the 1971 Pan American Games in Cali, Colombia, Heckl won a remarkable seven medals, six of them gold and one silver. His gold medal performances included three individual races: the 100- and 200-meter freestyle, and 100-meter butterfly (56.92); and three relay races: the 4x100-meter freestyle (3:32.15), 4x200-meter freestyle (7:45.82), and 4x100-meter medley (3:56.08). He also won a silver medal in the 200-meter medley (2:12.11).