| 2021-12-01 | Power Rankings Week 13 | Where do the Chiefs Rank Following the Bye Week? |
| 2021-12-02 | Tommy Townsend Earns AFC Special Teams Player of the Month Honors |
| 2021-12-03 | No Matter the Distance, Chiefs Kingdom Has Routinely Made Its Presence Felt on the Road |
| 2021-12-03 | Here’s How to Participate in the Annual Chiefs Kingdom Food Drive |
| 2021-12-03 | Week 13 Injury Report | Chiefs vs. Broncos |
| 2021-12-04 | Chiefs Recognize Airman First Class Matthew Posey as This Week’s Tribute to the Troops Honoree Presented by Crown Royal |
| 2021-12-05 | Important Fan Information: Sunday Night’s Game Serves as Chiefs My Cause My Cleats Game |
| 2021-12-05 | How to Watch and Listen | Week 13: Chiefs vs. Broncos |
| 2021-12-06 | Week 13 Inactives | Chiefs vs. Broncos |
| 2021-12-06 | Defense and Special Teams Dominate as Chiefs Defeat Broncos, 22-9, on Sunday Night |
| 2021-12-06 | Tickets for Potential Postseason Games at GEHA Field at Arrowhead Stadium Set to Go On Sale Next Week |
| 2021-12-06 | 10 Quick Facts About the Chiefs’ Week 13 Victory Over Denver | Upon Further Review |
| 2021-12-07 | Safety Tyrann Mathieu Named Chiefs Nominee for Walter Payton NFL Man of the Year Award presented by Nationwide |
| 2021-12-07 | Power Rankings Week 14 | Where do the Chiefs Rank Following Sunday’s Victory? |
| 2021-12-09 | Important Fan Information Announced for Sunday's Divisional Chiefs Game |
| 2021-12-09 | Clint Rider Named Chiefs Eric Driskell High School Coach of the Year for the 2021 Season |
| 2021-12-11 | Melvin Ingram, Who’s “Playing Angry,” Continues to Be a Transformative Figure on Defense |
| 2021-12-11 | Chiefs Recognize Staff Sergeant Aquai Alexander as This Week’s Tribute to the Troops Honoree Presented by Crown Royal |
| 2021-12-11 | How to Watch and Listen | Week 14: Chiefs vs. Raiders |
| 2021-12-12 | Week 14 Injury Report | Chiefs vs. Raiders |
| 2021-12-12 | Week 14 Inactives | Chiefs vs. Raiders |
| 2021-12-13 | Chiefs Put Together Complete Team Effort in Dominant Victory Over Raiders |
| 2021-12-13 | 10 Quick Facts About the Chiefs' Week 14 Victory Over Las Vegas | Upon Further Review |
| 2021-12-14 | Power Rankings Week 15 | Where do the Chiefs Rank Following Sunday’s Victory? |
| 2021-12-15 | Mike Hughes Earns AFC Defensive Player of the Week Honors |
| 2021-12-15 | Chiefs Awarded International Marketing Rights for Germany and Mexico as Part of NFL’s Global Growth |
| 2021-12-16 | How to Watch and Listen | Week 15: Chiefs vs. Chargers |
| 2021-12-17 | Week 15 Inactives | Chiefs vs. Chargers |
| 2021-12-17 | Chiefs Complete Wild Comeback to Defeat Chargers, 34-28, in Overtime |
| 2021-12-17 | 10 Quick Facts About the Chiefs’ Week 15 Victory Over Los Angeles | Upon Further Review |
| 2021-12-20 | Tickets for Potential Divisional Round Game at GEHA Field at Arrowhead Stadium to Go On Sale Wednesday |
| 2021-12-22 | Travis Kelce Named AFC Offensive Player of the Week |
| 2021-12-22 | Power Rankings Week 16 | Where do the Chiefs Rank Following Thursday’s Victory? |
| 2021-12-23 | Six Chiefs Earn Nods to the 2022 Pro Bowl |
| 2021-12-24 | Chiefs Recognize Staff Sergeant Seth Bembrick as This Week’s Tribute to the Troops Honoree Presented by Crown Royal |
| 2021-12-25 | Week 16 Injury Report | Chiefs vs. Steelers |
| 2021-12-26 | Important Fan Information: Chiefs to Host Steelers in Regular Season Home Finale |
| 2021-12-26 | How to Watch and Listen | Week 16: Chiefs vs. Steelers |
| 2021-12-26 | Week 16 Inactives | Chiefs vs. Steelers |
| 2021-12-27 | Chiefs Dominate Steelers, 36-10, to Clinch Sixth-Straight AFC West Crown |
| 2021-12-27 | 10 Quick Facts About the Chiefs’ Week 16 Victory Over Pittsburgh | Upon Further Review |
| 2021-12-28 | Power Rankings Week 17 | Where do the Chiefs Rank Following Sunday’s Victory? |
| 2021-12-30 | Patrick Mahomes Named AFC Offensive Player of the Month |
