Zachary Apple (born April 23, 1997) is an American competitive swimmer who specializes in the sprint freestyle events. He currently swims for DC Trident in the International Swimming League. He won his first Olympic gold medal in the 4x100-meter freestyle relay at the 2020 Summer Olympics, swimming in the prelims and the final of the event, and later in the same Olympic Games won a gold medal and helped set a new world record in the 4x100-meter medley relay, swimming the freestyle leg of the relay in the final.