The 2021 CFL season was the 67th season of modern-day Canadian football. Officially, it was the 63rd season of the Canadian Football League. The regular season began on August 5, 2021, and ended November 20, 2021. Each team played 14 regular season games over 16 weeks. Previously, the season was scheduled to begin on June 10, 2021, and end on October 30, 2021, with 18 games being played per team over 21 weeks, but this was delayed due to the COVID-19 pandemic in Canada. Hamilton hosted the 108th Grey Cup on December 12, 2021.