Christal Clashing O'Reilly (born 8 September 1989) is an Antiguan swimmer, who specialized in sprint freestyle events. She also completed a Trans-Atlantic crossing as part of an all-woman team. As a one-time Olympian (2004), she is coached and trained by her mother Edith O'Reilly Clashing, who founded the Wadadli Aquatic Racers (WAR), an elite swim club in Antigua. Her sister Karin O'Reilly Clashing competed in the 50-metre freestyle at the 2012 Summer Olympics in London.