| < 1965 | 1967 > |
The 1966 AFL season was the seventh season of the American Football League, made up of 14 regular season games, The league began its merger process with the National Football League (NFL) in June, which took effect fully in 1970.
The Miami Dolphins became the 9th AFL team and played at the Orange Bowl.
The AFL now had nine teams, grouped into two divisions (the new Miami team was in the Eastern Division, now with five teams), and still played a 14-game schedule. In previous seasons (with eight clubs), each played a home-and-away game against the other seven. All nine teams faced each other at least once, and each team played six others twice. Though Boston and Miami were both in the Eastern Division, they met only once, on November 27 (each team played Western Division teams Kansas City and Denver twice, while Boston also played San Diego twice and Miami played Oakland twice --- meaning that the Patriots and Dolphins each had a schedule that called for them to face three non-division opponents more often than they played a divisional opponent).
The relocated Oakland Raiders moved from Frank Youell Field to the new Oakland–Alameda County Coliseum.
| REGULAR SEASON | September 2 – December 18, 1966 |
| 1966 afl championship game | January 1, 1966 |
| AFL Eastern Division | |||||
|---|---|---|---|---|---|
| RK | TEAM | W | L | T | |
| 1 |  |
Buffalo Bills | 9 | 4 | 1 |
| 2 |  |
boston patriots | 8 | 4 | 2 |
| 3 |  |
New York Jets | 6 | 6 | 2 |
| 4 |  |
Houston Oilers | 3 | 11 | 0 |
| 5 |  |
Miami Dolphins | 3 | 11 | 0 |
| AFL Western Division | |||||
| RK | TEAM | W | L | T | |
| 1 |  |
Kansas City Chiefs | 11 | 2 | 1 |
| 2 |  |
Oakland Raiders | 8 | 5 | 1 |
| 3 |  |
San Diego Chargers | 7 | 6 | 1 |
| 4 |  |
Denver Broncos | 4 | 10 | 0 |
| 1966 AFL Championship Game | |||||
|---|---|---|---|---|---|
| War Memorial Stadium, Buffalo,NY | |||||
| JAN 01 1967 |
 KC |
31 @ 7 | BUF |
||
The 1966 AFL Championship Game featured the Kansas City Chiefs (1st appearance as the Chiefs and 2nd overall appearance since relocating from the Dallas Texans) beating the Buffalo Bills (3rd consecutive appearance) to win their 1st AFL title.
The AFL-NFL World Championship Game, now known as Super Bowl I (NFL) featured the Kansas City Chiefs (1st appearance) losing to the Green Bay Packers (NFL).