Colleen Quigley (born November 20, 1992) is an American middle-distance runner from St. Louis, Missouri. She finished 12th in the 3000 metres steeplechase event at the 2015 World Championships in Athletics in Beijing, China and 8th in the 3000 metres steeplechase at the 2016 Summer Olympics.
Quigley signed professionally with the Bowerman Track Club in June 2015. Later that year, she finished third in the steeplechase in 9:24.92 at the 2015 USA Outdoor Track and Field Championships, and finished 12th in the 3000 metres steeplechase event at the 2015 World Championships in Athletics in Beijing, China.
She ran 9:20.00 to place ninth in the Diamond League event, Meeting de Paris, 2016. Prior to that, Quigley had run a personal best time of 9:21.10 to place eighth in the 3000 metres steeplechase at the 2016 Summer Olympics. Quigley had also run a personal best time of 9:21.29 to place third in the steeplechase behind Team USA teammates Emma Coburn and Courtney Frerichs at the 2016 United States Olympic Trials to qualify to represent the United States at the 2016 Summer Olympics. On September 3, 2018, she lowered her steeplechase PR to 9:10.27 winning at ISTASF in Berlin, becoming the third-fastest American woman ever.