The 104th Grey Cup was a Canadian football game that was played on November 27, 2016, between the Calgary Stampeders and the Ottawa Redblacks, that decided the champion for the 2016 CFL season. In an upset, the Redblacks defeated the heavily favoured Stampeders 39–33 in overtime to win a championship in just their third season of existence. This was the third Grey Cup game to go into overtime. This also marked a first that a CFL team won its division with a losing record (8–9–1) and became the 3rd worst team to win the Grey Cup.

The Ottawa Redblacks are a professional Canadian football team based in Ottawa, Ontario. The team plays in the East Division of the Canadian Football League (CFL).