1980 Nippon Professional Baseball season

The 1980 Nippon Professional Baseball season was the 31st season of operation for the league.

Pacific League Playoff
The Pacific League teams with the best first and second-half records met in a best-of-five playoff series to determine the league representative in the Japan Series.

Kintetsu Buffaloes won the series 3–0.

Japan Series
Hiroshima Toyo Carp won the series 4–3.