Janet Beth Evans (born August 28, 1971) is an American former competition swimmer who specialized in distance freestyle events. Evans was a world champion and world record-holder, and won a total of four gold medals at the 1988 and the 1992 Olympics.
Born in Fullerton, California, Evans grew up in neighboring Placentia, where she started swimming competitively as a child. By the age of 11, she was setting national age group records in distance events. After swimming as a teenager for Fullerton Aquatics (FAST Swimming) and graduating from El Dorado High School, Evans attended Stanford University, where she swam for the Stanford Cardinal swimming and diving team from 1989 to 1991. She received the Honda Sports Award for Swimming and Diving, recognizing her as the outstanding college female swimmer of the year in 1988–89. When the NCAA placed weekly hours limits on athletic training time, she quit the Stanford swim team to focus on training. She later attended the University of Texas at Austin before graduating from the University of Southern California with a bachelor's degree in communications in 1994.