1970 Houston Astros season

The 1970 Houston Astros season was a season in American baseball. The team finished fourth in the National League West with a record of 79–83, 23 games behind the Cincinnati Reds.

Offseason

 * November 21, 1969: Mike Marshall was purchased by the Astros from the Milwaukee Brewers.
 * December 4, 1969: Curt Blefary was traded by the Astros to the New York Yankees for Joe Pepitone.

Notable transactions

 * June 4, 1970: Greg Gross was drafted by the Astros in the 4th round of the 1970 Major League Baseball draft. Player signed June 9, 1970.
 * June 23, 1970: Mike Marshall was traded by the Astros to the Montreal Expos for Don Bosch.
 * July 29, 1970: Joe Pepitone was purchased from the Astros by the Chicago Cubs.
 * August 12, 1970: Jim Bouton was released by the Houston Astros.

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: Columbus