List of Houston Astros team records

This is a list of individual single-season records for the Houston Astros of Major League Baseball.

Single-season batting leaders^[1]^[2]

Batting average: Jeff Bagwell (.368, 1994)
On-base percentage: Jeff Bagwell (.454, 1999)
Slugging average: Jeff Bagwell (.750, 1994)
On-base plus slugging: Jeff Bagwell (1.201, 1994)
At bats: José Altuve (660, 2014)
Runs: Jeff Bagwell (152, 2000)
Hits: Jose Altuve (225, 2014)
Total bases: Jeff Bagwell (363, 2000)
Singles: José Altuve (168, 2014)
Doubles: Craig Biggio (56, 1999)
Triples: Roger Metzger (14, 1973)
Home runs: Jeff Bagwell (47, 2000)
Extra-base hits: Lance Berkman (94, 2001)
RBI: Lance Berkman (136, 2006)
Walks: Jeff Bagwell (149, 1999)
Strikeouts: Chris Carter (212, 2013)
Stolen bases: Gerald Young (65, 1988)
Times on base: Jeff Bagwell (331, 1999)
Times hit by pitch: Craig Biggio (34, 1997)
Sacrifice hits: Craig Reynolds (34, 1979)
Intentional walks: Jeff Bagwell (27, 1997)
Times grounded into double play: Miguel Tejada (32, 2008)
At bats per strikeout (most, from among players to have met innings played qualification): Bob Lillis (40.8, 1965)
At bats per home run (fewest, from among players to have met innings played qualification): Jeff Bagwell (10.3, 1994)

ERA: Nolan Ryan (1.69, 1981)
Wins: Mike Hampton (22, 1999)
Win-loss percentage (from among players to have met games started qualification): Mike Hampton (.846, 1999)
WHIP: Mike Scott (.923, 1986)
Walks issued per nine innings (from among players to have met innings pitched qualification): José Lima (1.23, 1998)
Hits allowed per nine innings (from among players to have met innings pitched qualification): Mike Scott (5.95, 1986)
Home runs allowed: José Lima (48, 2000)
Walks allowed: J. R. Richard (151, 1976)
Hits allowed: Jerry Reuss (271, 1973)
Strikeouts thrown per nine innings: Nolan Ryan (11.48, 1987)
Games pitched: Octavio Dotel (83, 2002)
Saves: Billy Wagner (44, 2003)
Innings pitched: Larry Dierker (305¹⁄₃, 1969)
Strikeouts: J. R. Richard (313, 1979)
Games started: Jerry Reuss (40, 1973)
Complete games: Larry Dierker (20, 1969)
Shutouts: Dave Roberts (6, 1973)
Strikeout-to-walk ratio (from among players to have met innings pitched qualification): Shane Reynolds (5.32, 1999)
Losses: Turk Farrell (20, 1962)
Earned runs allowed (most): José Lima (145, 2000)
Wild pitches: Joe Niekro (21, 1985)
Batters faced: J. R. Richard (1,218, 1976)
Games finished: Jose Valverde (71, 2008)

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