| 1966 San Francisco 49ers season | |
|---|---|
| Owner | Josephine Morabito Jane Morabito |
| General manager | Louis Spadia |
| Head coach | Jack Christiansen |
| Home field | Kezar Stadium |
| Results | |
| Record | 6–6–2 |
| Division place | 4th NFL Western |
| Playoff finish | Did not qualify |
| Pro Bowlers | Bruce Bosley, Howard Mudd, Dave Parks, John Thomas, Dave Wilcox, Ken Willard |
| AP All-Pros | John Thomas |
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. However, the 49ers faltered, starting their season 0-2-1. 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.