The 1956Chicago Cardinals season was the 37th season the team was in the league. The team improved on their previous output of 4–7–1, winning seven games. They failed to qualify for the playoffs for the eighth consecutive season.
On October 7, 1956, the Cardinals played the New York Giants in front of only 21,799 fans. The week before, against Cleveland, the Cardinals played to a crowd of 20,966. It was the smallest paid attendance of all the NFL opening week games.