1977 Houston Astros season

The 1977 Houston Astros season was a season in American baseball. The team finished third in the National League West with a record of 81–81, 17 games behind the Los Angeles Dodgers.

Offseason

 * December 8, 1976: Greg Gross was traded by the Astros to the Chicago Cubs for Julio González.
 * January 11, 1977: John Butcher was drafted by the Astros in the 1st round (5th pick) of the secondary phase of the 1977 Major League Baseball draft, but did not sign.
 * January 25, 1977: Paul Siebert was traded by the Astros to the San Diego Padres for Mike Allen (minors).
 * March 26, 1977: Rob Andrews and cash were traded by the Astros to the San Francisco Giants for Willie Crawford and Rob Sperring.

Notable transactions

 * June 7, 1977: Scott Loucks was drafted by the Astros in the 5th round of the 1977 Major League Baseball draft.
 * June 15, 1977: Willie Crawford was traded by the Astros to the Oakland Athletics for Denny Walling.

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: Charleston