1966 St. Louis Cardinals (NFL) season

The 1966 St. Louis Cardinals season was the 47th season the team was in the National Football League (NFL), and the seventh in St. Louis. The team moved its home games from the old Busch Stadium to the new Busch Stadium in downtown St. Louis, and bettered their 1965 record of 5–9, winning eight games. Despite the improvement, they failed to qualify for the playoffs for the 18th consecutive season.