Josie Carroll (born December 8, 1957) is a Canadian Thoroughbred horse trainer, who in 2006 became the first woman trainer to win the Queen's Plate, the oldest thoroughbred horse race in Canada and Canada's most prestigious race. She also won the Queen's Plate in 2011 and 2020, the Prince of Wales Stakes in 2016 and 2020, and the Breeder's Stakes in 2014 In recent years she has been one of the leading trainers at Woodbine Racetrack in Toronto and has won a number of graded stakes races both in Canada and in the United States.