1971 San Francisco Giants season

The 1971 San Francisco Giants season was the Giants' 89th year in Major League Baseball, their 14th year in San Francisco since their move from New York following the 1957 season, and their 12th at Candlestick Park. The team finished in first place in the National League West with a 90–72 record. The Giants faced the Pittsburgh Pirates in the NLCS, losing three games to one.

Offseason

 * December 30, 1970: Ron Hunt was traded by the Giants to the Montreal Expos for Dave McDonald.

Regular season

 * The Giants battled their arch rival, the Los Angeles Dodgers, throughout the season for the NL West Division lead. The Giants led by 8.5 games on September 1.  In mid September the Dodgers won 8 in a row, including 5 over the Giants to narrow the gap to one game. On the final day of the season, rookie Dave Kingman homered, leading the Giants to a win over the San Diego Padres to take the division crown, allowing Juan Marichal, Willie Mays, and Willie McCovey to play in the post season for the last time together.
 * September 5, 1971: In a game against the Giants, J. R. Richard of the Houston Astros struck out 15 batters in his very first game, tying a Major League record first set by Karl Spooner.

Notable transactions

 * May 29, 1971: George Foster was traded by the Giants to the Cincinnati Reds for Frank Duffy and Vern Geishert.
 * June 1, 1971: Bob Heise was traded by the Giants to the Milwaukee Brewers for Floyd Wicker.
 * June 8, 1971: 1971 Major League Baseball draft
 * Frank Riccelli was drafted by the Giants in the 1st round (18th pick).
 * Willie Prall was drafted by the Giants in the 3rd round.

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

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

National League Championship Series
The Pittsburgh Pirates win the series, 3–1, over the Giants.

Award winners

 * Willie Mays, Commissioner's Award

Farm system
LEAGUE CHAMPIONS: Great Falls