2021 Nippon Professional Baseball season
The 2021 Nippon Professional Baseball season was the 72nd season of professional baseball in Japan since Nippon Professional Baseball 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.
Climax Series
Final stage
The series started with a 1–0 advantage for the first-placed team.League leaders
Central League
| Stat | Player | Team | Total |
| Batting average | Seiya Suzuki | Hiroshima Toyo Carp | .317 |
| Home runs | Munetaka Murakami Kazuma Okamoto | Tokyo Yakult Swallows Yomiuri Giants | 39 |
| Runs batted in | Kazuma Okamoto | Yomiuri Giants | 113 |
| Hits | Kōji Chikamoto | Hanshin Tigers | 178 |
| Stolen bases | Takumu Nakano | Hanshin Tigers | 30 |
| On-base percentage | Seiya Suzuki | Hiroshima Toyo Carp | .433 |
| Stat | Player | Team | Total |
| Wins | Kōyō Aoyagi Aren Kuri | Hanshin Tigers Hiroshima Toyo Carp | 13 |
| Earned run average | Yūya Yanagi | Chunichi Dragons | 2.20 |
| Strikeouts | Yūya Yanagi | Chunichi Dragons | 168 |
| Saves | Robert Suárez | Hanshin Tigers | 42 |
| Holds | Noboru Shimizu | Tokyo Yakult Swallows | 53 |
| Winning percentage | Kōyō Aoyagi | Hanshin Tigers | .684 |
Pacific League
| Stat | Player | Team | Total |
| Batting average | Masataka Yoshida | Orix Buffaloes | .339 |
| Home runs | Yutaro Sugimoto | Orix Buffaloes | 32 |
| Runs batted in | Hiroaki Shimauchi | Tohoku Rakuten Golden Eagles | 96 |
| Hits | Takashi Ogino | Chiba Lotte Marines | 169 |
| Stolen bases | Sōsuke Genda Takashi Ogino Koshiro Wada Haruki Nishikawa | Saitama Seibu Lions Chiba Lotte Marines Chiba Lotte Marines Hokkaido Nippon-Ham Fighters | 24 |
| On-base percentage | Masataka Yoshida | Orix Buffaloes | .429 |
| Stat | Player | Team | Total |
| Wins | Yoshinobu Yamamoto | Orix Buffaloes | 18 |
| Earned run average | Yoshinobu Yamamoto | Orix Buffaloes | 1.39 |
| Strikeouts | Yoshinobu Yamamoto | Orix Buffaloes | 206 |
| Saves | Naoya Masuda | Chiba Lotte Marines | 38 |
| Holds | Mizuki Hori | Hokkaido Nippon-Ham Fighters | 42 |
| Winning percentage | Yoshinobu Yamamoto | Orix Buffaloes | .783 |