Kaylee Rochelle McKeown is an Australian swimmer and multiple Olympic gold medalist. She is widely considered the greatest backstroker of all time, holding a record 10 individual backstroke titles across the Olympic Games and World Aquatics Championships. She is the reigning Olympic champion in the 100 and 200 metres backstroke. She is the world record holder in the long course and short course 200 metre backstroke, and is the former world record holder in the long course 50 metre backstroke and both the long course and short course 100 metre backstroke. She won gold in both the 100 metre and 200 metre backstroke at both the 2020 and 2024 Olympics. In 2023, she was named as the "Best Female Swimmer of the Year" by World Aquatics, after sweeping gold in all three events of backstroke at all three World Cup legs, held in Berlin, Athens and Budapest in October, 2023.