1943 Boston Red Sox season

The 1943 Boston Red Sox season was the 43rd season in the franchise's Major League Baseball history. The Red Sox finished seventh in the American League (AL) with a record of 68 wins and 84 losses, 29 games behind the New York Yankees, who went on to win the 1943 World Series.

The Red Sox set a major league record, which still stands, by playing in 31 extra innings games. In those games, the Red Sox compiled a record of 15 wins and 14 losses, with two ties. They played 73 extra innings in total, equivalent to playing an additional eight 9-inning games.

Offseason

 * Due to wartime considerations, the team held spring training at Tufts University in Medford, Massachusetts.
 * Prior to 1943 season: Bill Howerton was signed as an amateur free agent by the Red Sox.

Transactions
June 2: Joe Green, a pitcher for the University of North Carolina Baseball Team, signs a contract with the Red Sox and joins the Roanoke Red Sox.

June 14: The Red Sox trade pitcher Ken Chase to the New York Giants in exchange for outfielder Babe Barna.

Starters by position
''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters
''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Starting pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers
Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers
Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts