The 1980 Houston Astros season was a season in American baseball. The team finished in a tie for first place in the National League West with a record of 92–70 with the Los Angeles Dodgers. The teams played a one-game playoff to determine the division champion, which the Astros won, marking the first time in franchise history that the team qualified for the postseason. They went on to face the Philadelphia Phillies in the NLCS, losing three games to two.