1975 Pittsburgh Pirates season

The 1975 Pittsburgh Pirates season was the 94th in the history of the franchise and their 89th in the National League. The Pirates' 92–69 record was good enough to win their fifth National League East title in six seasons by 6$1⁄2$ games over their cross-state rivals, the Philadelphia Phillies. The Pirates, however, lost the NLCS to the Cincinnati Reds, three games to none.

Offseason

 * October 22, 1974: Gene Clines was traded by the Pirates to the New York Mets for Duffy Dyer.
 * January 6, 1975: Nelson Norman was signed as an amateur free agent by the Pirates.
 * February 20, 1975: Albert Williams was signed as an amateur free agent by the Pirates.

Regular season

 * September 16, 1975: Rennie Stennett goes 7-for-7 against the Chicago Cubs at Wrigley Field in a 22-0 rout. He is the only MLB player in the 20th century to go 7-for-7 in a 9-inning game.

Game log

 * Legend:      = Win       = Loss Bold = Pirates team member
 * Legend:      = Win       = Loss Bold = Pirates team member

Notable transactions

 * April 2, 1975: Sam McDowell was signed as a free agent by the Pirates.
 * June 3, 1975: Ernie Camacho was drafted by the Pirates in the 12th round of the 1975 Major League Baseball draft, but did not sign.
 * June 26, 1975: Sam McDowell was released by the Pirates.
 * July 30, 1975: Paul Popovich was released by the Pirates.

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''

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 Cincinnati Reds defeated the Pittsburgh Pirates, 3 games to 0.

Awards and honors
1975 Major League Baseball All-Star Game