1984 Houston Astros season

The Houston Astros' 1984 season, the team competed in the National League West.

Offseason

 * February 17, 1984: J. R. Richard was signed as a free agent by the Astros.

Notable transactions

 * April 27, 1984: J. R. Richard was released by the Astros.
 * May 25, 1984: Alan Bannister was traded by the Astros to the Texas Rangers for Mike Richardt.
 * June 4, 1984: 1984 Major League Baseball Draft
 * Ken Caminiti was drafted by the Astros in the 3rd round. Player signed June 9, 1984.
 * John Vander Wal was drafted by the Astros in the 8th round, but did not sign.
 * July 4, 1984: Scott Loucks was traded by the Astros to the Montreal Expos for Brad Mills.
 * August 28, 1984: Ray Knight was traded by the Astros to the New York Mets for players to be named later. The New York Mets completed the trade by sending Gerald Young and Manuel Lee to the Astros on August 31 and Mitch Cook (minors) to the Astros on September 10.

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

Farm system
LEAGUE CHAMPIONS: Asheville