The 1959 Major League Baseball season saw the Pittsburgh Pirates finish in fourth place in the National League at 78–76, nine games behind the NL and World Series Champion Los Angeles Dodgers.
The Pirates set the record for most extra innings victories in a season, winning 19 of their 21 extra inning games.
Infielders 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