Siri Lindley is an American triathlon coach and former professional triathlete. She is the 2001 ITU Triathlon World Champion as well as the winner of the 2001 and 2002 ITU Triathlon World Cup series and 2001 ITU Aquathlon World Championships. She has coached a number of Olympic and Ironman athletes and champions, including Mirinda Carfrae, Leanda Cave, Sarah True, and Susan Williams.
Lindley has also worked as a television sports analyst covering triathlon and field hockey events for NBC during the 2004 Summer Olympics. She has reported on NCAA Field Hockey, the NCAA Final Four, and the Big 10 Tournament for NBC, CSTV, and TVNZ.