2021 Nippon Professional Baseball season

The 2021 Nippon Professional Baseball season was the 72nd season of professional baseball in Japan since Nippon Professional Baseball (NPB) was reorganized in 1950. There were 12 NPB teams, split evenly between the Central League and Pacific League.

Following the All-Star Series held on 16–17 July, the regular season went on hiatus in preparation for the 2020 Summer Olympics baseball tournament. The season resumed on 13 August. In the postseason, the Tokyo Yakult Swallows defeated the Orix Buffaloes in the Japan Series.

Final Stage
The series started with a 1–0 advantage for the first-placed team.