The 2021 Montreal Alouettes season was the 54th season for the team in the Canadian Football League and their 66th overall. The Alouettes qualified for the playoffs on November 5, 2021, after the Hamilton Tiger-Cats defeated the BC Lions in week 14. The team's season was ended by the same Tiger-Cats following a 23–12 East Semi-Final loss in Hamilton. The 2021 CFL season was the second season for Khari Jones as the Alouettes' head coach and offensive coordinator as he had the "interim" tag removed after he agreed to a three-year extension on November 26, 2019. This was his first full season as the team's head coach. This was also the first season with Danny Maciocia as the team's general manager. An 18-game season schedule was originally released on November 20, 2020, but it was announced on April 21, 2021 that the start of the season would likely be delayed until August and feature a 14-game schedule. On June 15, 2021, the league released the revised 14-game schedule with regular season play beginning on August 5, 2021. (en)