Courtney Lynn Kaiulani Mathewson (born September 14, 1986) is an American water polo player, part of the US team that won the gold medal at the 2012 Summer Olympics. She played water polo for the University of California, Los Angeles (UCLA) Bruins during their four-consecutive NCAA National Champion Women's Water Polo championships, and was named to the All-Tournament first team. At UCLA, she majored in sociology.