William Ray Kennedy (born October 26, 1952) is a Canadian former swimmer who competed at the 1972 Summer Olympics. He swam for Canada's third-place team in the preliminary heats of the men's 4x100-metre medley relay. He was ineligible to receive a medal under the Olympic swimming rules then in effect, however, because he did not swim in the event final. He also competed in the preliminary heats of the men's 200-metre backstroke, but did not advance.