James Michael Gregory was a Canadian professional ice hockey coach and executive. Born in Port Colborne, Ontario and raised in Dunnville, Ontario, Gregory attended St. Michael's College School in Toronto where he became involved with the school's ice hockey teams, first as a trainer, eventually moving to management and coaching positions. He went on to coach and manage the Toronto Marlboros, winning two championships. He then moved to the National Hockey League's (NHL) Toronto Maple Leafs, serving as their general manager between 1969 and 1979. He led the team to eight playoff appearances during his ten-year tenure. He then moved to the NHL head offices, becoming the director of central scouting, and later took a directorship position in the hockey operations department, which he held until his death.

Port Colborne is a city in Ontario, Canada that is located on Lake Erie, at the southern end of the Welland Canal, in the Niagara Region of Southern Ontario. The original settlement, known as Gravelly Bay, dates from 1832 and was renamed after Sir John Colborne, a British war hero and the Lieutenant Governor of Upper Canada at the time of the opening of the (new) southern terminus of the First Welland Canal in 1833. The city's population in 2021 was 20,033.