Breeja Larson (born April 16, 1992) is an American competition swimmer who specializes in the breaststroke, and is an Olympic gold medalist. She earned a gold medal in the 4×100-meter medley relay at the 2012 Summer Olympics.
Larson was born in Mesa, Arizona, one of seven sisters. She later moved to Boise, Idaho where she attended Centennial High School in Boise, Idaho for three years and graduated from Mountain View High School in Mesa in 2010. She swam for the Centennial Patriot and Mountain View Toros high school swim teams. As a senior, she was the state runner-up in the 100-yard breaststroke. She also lettered in softball and track and field.
She attended Texas A&M University, where she swam for the Texas A&M Aggies swimming and diving team in National Collegiate Athletic Association (NCAA) competition from 2011 to 2014. As a freshman, she finished second in both the 100-yard and 200-yard breaststroke at the 2011 NCAA Women's Swimming and Diving Championships; as a sophomore in 2012, she was the NCAA national champion in the 100-yard breaststroke, and finished third in the 200-yard event. She was a senior during the 2013–14 school year.