|1966 Buffalo Bills season|
|Head coach||Joe Collier|
|Home field||War Memorial Stadium|
|Division place||1st AFL Eastern|
|Playoff finish||Lost AFL Championship (vs. Chiefs) 7–31|
The 1966 Buffalo Bills season was the team’s seventh season in the American Football League. It was the first season for head coach Joe Collier, who had been the Bills' defensive coordinator for the previous four seasons.
It ended with a loss in the AFL Championship Game to the Kansas City Chiefs, ending the team's two-year reign as league champions. The score was 31-7 during the time.
The Bills allowed the fewest points in the AFL for the third consecutive year. Although defensive tackle Tom Sestak hampered by a bad knee, defensive linemen Jim Dunaway and Ron McDole took a leadership position. Linebackers Mike Stratton, Harry Jacobs and John Tracey, and defensive backs George Saimes, Butch Byrd, Hagood Clarke and Tom Janik provided a strong defensive foundation.
Halfback Bobby Burnett and split end Bobby Crockett joined long-time Bills running back Wray Carlton and quarterback Jack Kemp, leading Buffalo's offense to scoring 358 points, second-most in the AFL in 1966. Burnett's 1,185 total yards from scrimmage were 5th in the AFL, and garnered AFL Rookie of the Year honors for Burnett.
|1966 Buffalo Bills staff|
|1966 Buffalo Bills roster|
|Note: Rookies in italics|
Lou Saban, who had coached the Bills to consecutive AFL Championships, left the team after the 1965 season to coach at the University of Maryland.
Main article: 1966 American Football League draft
|1||September 4||at San Diego Chargers||L 7–27||0–1||Balboa Stadium||27,572||Recap|
|2||September 11||Kansas City Chiefs||L 20–42||0–2||War Memorial Stadium||42,023||Recap|
|3||September 18||Miami Dolphins||W 58–24||1–2||War Memorial Stadium||37,546||Recap|
|4||September 25||Houston Oilers||W 27–20||2–2||War Memorial Stadium||42,256||Recap|
|5||October 2||at Kansas City Chiefs||W 29–14||3–2||Municipal Stadium||43,885||Recap|
|6||October 8||Boston Patriots||L 10–20||3–3||War Memorial Stadium||45,542||Recap|
|7||October 16||San Diego Chargers||T 17–17||3–3–1||War Memorial Stadium||45,169||Recap|
|9||October 30||at New York Jets||W 33–23||4–3–1||Shea Stadium||61,552||Recap|
|10||November 6||at Miami Dolphins||W 29–0||5–3–1||Miami Orange Bowl||37,177||Recap|
|11||November 13||New York Jets||W 14–3||6–3–1||War Memorial Stadium||45,738||Recap|
|12||November 20||at Houston Oilers||W 42–20||7–3–1||Rice Stadium||27,312||Recap|
|13||November 24||at Oakland Raiders||W 31–10||8–3–1||Oakland–Alameda County Coliseum||36,781||Recap|
|14||December 4||at Boston Patriots||L 3–14||8–4–1||Fenway Park||39,350||Recap|
|16||December 18||Denver Broncos||W 38–21||9–4–1||War Memorial Stadium||40,583||Recap|
|AFL Eastern Division|
|New York Jets||6||6||2||.500||4–3–1||322||312||W1|
Note: Tie games were not officially counted in the standings until 1972.
|Buffalo Bills roster|
Main article: 1966 American Football League Championship Game
Kansas City Chiefs 31, Buffalo Bills 7
The Bills entered the AFL championship game seeking their third consecutive title. Though the game was played in Buffalo, the visiting Kansas City Chiefs were three-point favorites, mainly because of their explosive and innovative offense led by head coach Hank Stram. The Bills were a more conventional team with a solid defensive line and a running mindset on offense.
Buffalo found no offensive rhythm in the second half, and the Chiefs closed the game out in the fourth quarter with Dawson found Chris Burford for a 45-yard gain, setting up a one-foot touchdown run by rookie Mike Garrett. Less than two minutes later, Garrett scored a second touchdown following another Bills fumble.