Sharon Marie Stouder (November 9, 1948 – June 23, 2013), also known by her married name Sharon Stouder Clark, was an American competition swimmer, three-time Olympic champion, and former world record-holder in four events. Stouder swam sprint butterfly and sprint freestyle. She was the second woman in history to go under the one-minute barrier in the 100-meter freestyle, the event she got her silver medal in at the 1964 Olympics. In 1964 she twice broke the world record in the women's 200-meter butterfly.