| Competition: | Allsvenskan |
| Season: | 1966 |
| Winners: | Djurgårdens IF |
| Relegated: | IK Brage Degerfors IF |
| Continentalcup1: | European Cup |
| Continentalcup1 Qualifiers: | Djurgårdens IF |
| League Topscorer: | Ove Kindvall, IFK Norrköping (20) |
| Average Attendance: | 8,668 |
| Prevseason: | 1965 |
| Nextseason: | 1967 |
Statistics of Allsvenskan in season 1966.
The league was contested by 12 teams, with Djurgårdens IF Fotboll winning the championship.