- Source: 2021 Mountain West Conference Football Championship Game
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- Mountain West Conference Football Championship Game
- 2021 Mountain West Conference Football Championship Game
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- 2023 Mountain West Conference Football Championship Game
- 2022 Mountain West Conference Football Championship Game
- 2020 Mountain West Conference Football Championship Game
- 2024 Mountain West Conference football season
- 2021 Mountain West Conference football season
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- 2022 Mountain West Conference football season
The 2021 Mountain West Conference Football Championship Game was a college football game played on December 4, 2021, at Dignity Health Sports Park in Carson, California. It was the ninth edition of the Mountain West Conference Football Championship Game and determined the champion of the Mountain West Conference (MWC) for the 2021 season. The game began at 12:00 p.m. PST and was aired on Fox. The game featured the Utah State Aggies, the Mountain Division champions, and the San Diego State Aztecs, the West Division champions. San Diego State won the right to host the game as a result of having the better conference record between the two teams.
Teams
= Utah State Aggies
=Utah State clinched the Mountain Division championship with a victory at New Mexico on November 26. The Aggies finished with a conference record of 6–2 and held the head-to-head tiebreaker over Air Force thanks to their win over the Falcons on September 18. Utah State will be making their first conference championship game appearance since the inaugural contest in 2013, and are seeking their first Mountain West Conference championship.
= San Diego State Aztecs
=San Diego State clinched the West Division championship outright with a conference record of 7–1 after beating Boise State on November 26. The Aztecs will be making their first conference championship game appearance since their victory in 2016.
This was the Aztecs' final game at their temporary home of Dignity Health Sports Park. They will move into their new home of Aztec Stadium, built on the site of their former home of San Diego Stadium, in 2022.