Rebecca Soni (born March 18, 1987) is an American former competition swimmer and breaststroke specialist who is a six-time Olympic medalist. She is a former world record-holder in the 100-meter breaststroke (short and long course) and the 200-meter breaststroke (short and long course), and is the first woman to swim the 200-meter breaststroke in under 2 minutes 20 seconds. As a member of the U.S. national team, she currently holds the world record in the 4×100-meter medley relay (long course).
Soni has won a total of twenty-two medals in major international competition, fourteen gold, seven silver, and one bronze spanning the Olympics, the World, the Universiade, and the Pan Pacific Championships. She burst onto the international scene at the 2008 Summer Olympics where she won two silver medals and one gold. In the 200-meter breaststroke at the Olympics, she set the world record en route to winning gold, shocking Australian favorite Leisel Jones. Four years later at the 2012 Summer Olympics, Soni successfully defended her Olympic title in the 200-meter breaststroke in world record time, becoming the first woman to do so in the event.