The 2011 CFL season was the 58th season of modern Canadian professional football. Officially, it was the 54th season of the league. The complete schedule was released on February 18 and featured the defending Grey Cup champion Montreal Alouettes opening the season against the visiting BC Lions on Thursday, June 30, 2011. The season was among the most notable in the modern era for the competitiveness of the teams; going into the final week, five teams were tied for first place in the league, a first in modern CFL history. It was also the first time since 1982 that all teams finished with fewer than 12 wins in the regular season. As well, for the first time since 1950, the start of the modern era, all four teams competing in the divisional finals were different from the four teams that had competed in the division finals the previous year. Newly renovated BC Place Stadium in Vancouver hosted the 99th Grey Cup on November 27, with the hometown Lions defeating the Winnipeg Blue Bombers 34–23 in front of a sold-out crowd.

The CFL will return to Moncton for the second installment of the Touchdown Atlantic series. The Hamilton Tiger-Cats will be the home team, while the Calgary Stampeders are the visitors with the game scheduled to take place on Sunday, September 25.

When the 2011 schedule was released, it was revealed that the typical Labour Day Classic match-up featuring the Hamilton Tiger-Cats hosting the Toronto Argonauts would not occur this year for the first time since 1995. Instead the Tiger-Cats will play host to the Montreal Alouettes and then visit the Alouettes the following week as a part of a home-and-home series. While the fan reaction was heated, Commissioner Mark Cohon explained that due to a lack of available home dates for the Argonauts, Toronto would be hosting a game against the BC Lions that weekend, necessitating the need for the change. This will be the ninth time that Hamilton will have played Montreal on the Labour Day weekend.

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