The 1943 NFL Championship Game was the 11th annual title game of the National Football League (NFL), held at Wrigley Field in Chicago on December 26 with an attendance of 34,320. In a rematch of the previous year's game, the Western Division champion Chicago Bears (8–1–1) met the Eastern Division champion Washington Redskins (6–3–1). The previous week, the Redskins had defeated the New York Giants at the Polo Grounds in a playoff game by a score of 28–0 to determine the champs of the east, after the teams ended the regular season with identical records. The Redskins had dropped their final three regular season games, including two to the Giants. Even though the Giants had swept the season series with Washington, the rules of the time called for a tiebreaker game.

Throughout its history, the National Football League (NFL) and other rival American football leagues have used several different formats to determine their league champions, including a period of inter-league matchups to determine a true national champion.