Here's what you need to know for the 2025 Big 12 Football Championship Game, the 23rd edition. When is the 2025 Big 12 Championship? The 2025 Big 12 Championship is on Saturday, Dec. 6, 2025.

The NCAA approved the one-game extension to the regular season on Wednesday, June 25 during its summer meetings. The change will go into effect starting with the 2026 college football season.