Sarah Fredrika Sjöström is a Swedish competitive swimmer specialising in the sprint freestyle and butterfly events. She is the current world record holder in the 50 metre freestyle, the 100 metre freestyle, the 50 metre butterfly and the 100 metre butterfly. She is a former world record holder in the 50 metre freestyle, 100 metre freestyle, 100 metre butterfly, 200 metre freestyle, and the 4×50 metre medley relay. She is the first Swedish woman to win an Olympic gold medal in swimming. She won the Overall Swimming World Cup in 2017 and 2018. In 2022, she became the first swimmer representing a country in Europe to win 10 individual World Championships gold medals. She currently represents Energy Standard in the International Swimming League.