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.

Regular season

Season standings

Record vs. opponents

Roster

Player stats

Batting

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''

Pitching

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

World series

Game 1

October 5, 1921, at the Polo Grounds (IV) in New York City

Game 2

October 6, 1921, at the Polo Grounds (IV) in New York City

Game 3

October 7, 1921, at the Polo Grounds (IV) in New York City

Game 4

October 9, 1921, at the Polo Grounds (IV) in New York City

Game 5

October 10, 1921, at the Polo Grounds (IV) in New York City

Game 6

October 11, 1921, at the Polo Grounds (IV) in New York City

Game 7

October 12, 1921, at the Polo Grounds (IV) in New York City

Game 8

October 13, 1921, at the Polo Grounds (IV) in New York City