James Archibald Dunn was a Canadian sports executive involved in ice hockey, baseball, fastpitch softball, athletics, football and curling. He was president of the Canadian Amateur Hockey Association (CAHA) from 1955 to 1957, after he served five years as a vice-president. He assumed control of the CAHA when it had lost the confidence of the people to produce a Canada men's national team which would win the Ice Hockey World Championships, and recommended forming a national all-star team based on the nucleus of the reigning Allan Cup champion. He wanted to create more goodwill towards Canada in international hockey, accompanied the Kenora Thistles on an exhibition tour of Japan, then arranged for the Japan men's national team to tour Canada. In junior ice hockey, he was opposed to the mass transfers of players to the stronger teams sponsored by the National Hockey League, and supported weaker provincial champions to have additional players during the Memorial Cup playoffs. After his presidency, he represented the CAHA as a member of the Hockey Hall of Fame selection committee for 15 years.

The Canadian Amateur Hockey Association was the national governing body of amateur ice hockey in Canada from 1914 until 1994, when it merged with Hockey Canada. Its jurisdiction included senior ice hockey leagues and the Allan Cup, junior ice hockey leagues and the Memorial Cup, amateur minor ice hockey leagues in Canada, and choosing the representative of the Canada men's national ice hockey team.