The 105th Grey Cup was played on November 26, 2017, between the Calgary Stampeders and the Toronto Argonauts at TD Place Stadium in Ottawa, Ontario.

[4] It was reported in September 2015 that Ottawa would host the Grey Cup game, and that it would be determined at a board of governor's meeting later that fall.

[10] Due to ticket demand, the Redblacks added additional temporary bleachers in September to bring capacity to approximately 36,000 and the game officially sold out on October 26.

During the week leading up to the game, the mayors of Toronto and Calgary, John Tory (who was the CFL commissioner from 1996 to 2000) and Naheed Nenshi, placed a friendly bet on the outcome, with the losing city's mayor having to donate to charity, wear the winning team's jersey at the next city council meeting, and send the other a selection of local craft beer.

[21] Neither team could sustain drives throughout much of the first quarter until eleven minutes in, when Stamps quarterback Bo Levi Mitchell connected with Kamar Jorden for the contest's first touchdown.

DeVier Posey caught a pass from Toronto quarterback Ricky Ray at the Argo 44 and scampered to the end zone to tie the game 6–6.

While the Argos were shut out offensively in the second quarter, they scored two points thanks to a safety conceded by Calgary punter Rob Maver who, after mishandling a high snap, kicked the ball out of the back of the end zone.

Jerome Messam found the end zone again for the Stampeders roughly five minutes later, putting Calgary up 24–16 after a successful convert by Parades.

With 53 seconds left, Argo kicker Lirim Hajrullahu kicked the team's lone field goal, giving Toronto its first lead at 27–24.

On their final possession Calgary drove the ball deep into Argonaut territory, but instead of attempting a game-tying field goal decided to go for the jugular.

On 2nd-and-5 from the Argonaut 25, Mitchell's would-be touchdown pass fell into the hands of Argo defender Matt Black, sealing the victory for the Double Blue.

Running back Jerome Messam of the Stampeders received the Dick Suderman Trophy as the game's Most Valuable Canadian after scoring two touchdowns.