Gwen Rosemary Jorgensen (born April 25, 1986 in Waukesha, Wisconsin) is an American distance runner and former professional triathlete. She is the 2014 and 2015 ITU World Triathlon Series Champion. She has been named USA Triathlon's 2013 and 2014 Olympic/ITU Female Athlete of the Year. She was a member of the 2012 Olympic Team and again represented the United States in triathlon at the 2016 Summer Olympics, where she won the USA's first ever triathlon gold medal with a time of 1 hour, 56 minutes, and 16 seconds.
Jorgensen attended the University of Wisconsin-Madison, where she swam and ran for the Badgers. She earned a master's degree in accounting, passed the CPA exam, and worked for Ernst & Young in Milwaukee as a tax accountant. Soon after graduating and beginning her new job, USA Triathlon, who was pursuing former college swimmers and runners, encouraged Jorgensen to enter the sport of triathlon. In 2010, she was selected as USA Triathlon's Rookie of the year following her silver medal at the World University Triathlon Championships in Spain.