1981 Nippon Professional Baseball season

The 1981 Nippon Professional Baseball season was the 32nd 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.

Nippon-Ham Fighters won the series 3–1–1.

Japan Series
Yomiuri Giants won the series 4–2.