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 1971 National League Championship Series, losing three games to one.