The 1966 Houston Astros season was a season in American baseball. The team finished eighth in the National League with a record of 72–90, 23 games behind the Los Angeles Dodgers.
Nate Colbert was drafted by the Astros from the St. Louis Cardinals.
Bob Saverine was drafted from the Astros by the Washington Senators.
January 6, 1966: Johnny Weekly and cash were traded by the Astros to the New York Mets for Gary Kroll.
June 7, 1966: Fred Stanley was drafted by the Astros in the 8th round of the 1966 Major League Baseball draft.