The 1991 San Francisco Giants season was the Giants' 109th season in Major League Baseball, their 34th season in San Francisco since their move from New York following the 1957 season, and their 32nd at Candlestick Park. The team finished in fourth place in the National League West with a 75–87 record, 19 games behind the Atlanta Braves.

Offseason

Regular season

Season standings

Record vs. opponents

Opening Day starters

Notable transactions

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

Award winners

All-Star Game

Farm system

LEAGUE CHAMPIONS: Shreveport, Clinton