The 1921 New York Giants season was the franchise's 39th season, which culminated in the Giants defeating the New York Yankees in the World Series.

Infielders Other batters 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 October 5, 1921, at the Polo Grounds (IV) in New York City October 6, 1921, at the Polo Grounds (IV) in New York City October 7, 1921, at the Polo Grounds (IV) in New York City October 9, 1921, at the Polo Grounds (IV) in New York City October 10, 1921, at the Polo Grounds (IV) in New York City October 11, 1921, at the Polo Grounds (IV) in New York City October 12, 1921, at the Polo Grounds (IV) in New York City October 13, 1921, at the Polo Grounds (IV) in New York City