The 1966 San Francisco 49ers season was the franchise's 17th season in the National Football League, their 21st overall, and their fourth under head coach Jack Christiansen.
The 49ers attempted to improve on their 7–6–1 record from the previous year and make the playoffs for the first time in 8 years.
Despite winning their next 3 games, they split their next 8 games and tied 1 game to finish the season 6–6–2, and they missed the playoffs for the ninth straight year.
Running backs (RB) Wide receivers (WR) Tight ends (TE) Defensive linemen (DL) Defensive backs (DB) Special teams
Note that sack totals from 1960 to 1981 are considered unofficial by the NFL.