Devon Diggle (born 15 June 1988 in Montreal, Quebec) is a male former water polo player from Canada. He joined the senior Canadian national team in 2007. He was part of the Canadian team at the 2008 Summer Olympics. He also competed at the 2013 World Aquatics Championships in Barcelona, Spain, where they finished in 11th place. He played for Dollard-des-Ormeaux. He trained at the Talisman Centre in Calgary.