The 1940 St. Louis Cardinals season was the team's 59th season in St. Louis, Missouri and 49th season in the National League.
The Cardinals went 84–69 during the season and finished third in the National League.
Infielders Coaches Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg.
= Batting average; HR = Home runs; RBI = Runs batted in Note: G = Games played; AB = At bats; H = Hits; Avg.
= Batting average; HR = Home runs; RBI = Runs batted in Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts LEAGUE CHAMPIONS: Houston, Columbus (Sally), Johnson City, Williamson Arkansas–Missouri League folded, July 1, 1940; Caruthersville club transferred to Batesville, July 7[1]