William Rowen Granger (December 13, 1873 – April 24, 1925) was a Canadian sports administrator and businessman. He served as president of the Montreal AAA from 1918 to 1920, oversaw the revival of the association's ice hockey, baseball and soccer teams after World War I, and previously served as president of the Montreal Lawn Bowling Club and the Montreal Bicycle Club. He helped establish the Province of Quebec Lawn Bowling Association and became its president in 1919. He also served as president of the Inter-Club Road Race Association of Montreal, helped organize the Cyclists' Rights Committee in Montreal, and was a director of the Canadian Wheelmen's Association. He was instrumental in founding the Quebec Amateur Hockey Association (QAHA) in 1919, and became its second president. He was