2012 Nippon Professional Baseball season
The 2012 Nippon Professional Baseball season is the 63rd season since the NPB was reorganized in 1950.
Regular season standings
| Team | G | W | L | T | Pct. | GB |
| Hokkaido Nippon-Ham Fighters | 144 | 74 | 59 | 11 | .556 | — |
| Saitama Seibu Lions | 144 | 72 | 63 | 9 | .533 | 3.0 |
| Fukuoka SoftBank Hawks | 144 | 67 | 65 | 12 | .508 | 6.5 |
| Tohoku Rakuten Golden Eagles | 144 | 67 | 67 | 10 | .500 | 7.5 |
| Chiba Lotte Marines | 144 | 62 | 67 | 15 | .481 | 10.0 |
| Orix Buffaloes | 144 | 57 | 77 | 10 | .425 | 17.5 |
Climax Series
Note: All of the games that are played in the first two rounds of the Climax Series are held at the higher seed's home stadium. The team with the higher regular-season standing also advances if the round ends in a tie.First stage
The regular season league champions, the Hokkaido Nippon-Ham Fighters and the Yomiuri Giants, received byes to the championship round.Central League
Pacific League
Final stage
The regular season league champions, the Hokkaido Nippon-Ham Fighters and the Yomiuri Giants, received a one-game advantage.Central League
Pacific League
Japan Series
League leaders
Central League
| Stat | Player | Team | Total |
| Batting average | Shinnosuke Abe | Yomiuri Giants | .340 |
| Home runs | Wladimir Balentien | Tokyo Yakult Swallows | 31 |
| Runs batted in | Shinnosuke Abe | Yomiuri Giants | 104 |
| Runs | Hayato Sakamoto | Yomiuri Giants | 87 |
| Hits | Hayato Sakamoto Hisayoshi Chono | Yomiuri Giants Yomiuri Giants | 173 |
| Stolen bases | Yohei Oshima | Chunichi Dragons | 32 |
| Stat | Player | Team | Total |
| Wins | Tetsuya Utsumi | Yomiuri Giants | 15 |
| Losses | Bryan Bullington Minoru Iwata | Hiroshima Toyo Carp Hanshin Tigers | 14 |
| Earned run average | Kenta Maeda | Hiroshima Toyo Carp | 1.53 |
| Strikeouts | Toshiya Sugiuchi Atsushi Nomi | Yomiuri Giants Hanshin Tigers | 172 |
| Innings pitched | Kenta Maeda | Hiroshima Toyo Carp | 206 |
| Saves | Tony Barnette Hitoki Iwase | Tokyo Yakult Swallows Chunichi Dragons | 33 |
Pacific League
| Stat | Player | Team | Total |
| Batting average | Katsuya Kakunaka | Chiba Lotte Marines | .312 |
| Home runs | Takeya Nakamura | Saitama Seibu Lions | 27 |
| Runs batted in | Lee Dae-Ho | Orix Buffaloes | 91 |
| Runs | Sho Nakata | Hokkaido Nippon-Ham Fighters | 79 |
| Hits | Seiichi Uchikawa | Fukuoka SoftBank Hawks | 157 |
| Stolen bases | Ryo Hijirisawa | Tohoku Rakuten Golden Eagles | 54 |
| Stat | Player | Team | Total |
| Wins | Tadashi Settsu | Fukuoka SoftBank Hawks | 17 |
| Losses | Takayuki Kishi | Saitama Seibu Lions | 12 |
| Earned run average | Mitsuo Yoshikawa | Hokkaido Nippon-Ham Fighters | 1.71 |
| Strikeouts | Masahiro Tanaka | Tohoku Rakuten Golden Eagles | 169 |
| Innings pitched | Yoshihisa Naruse | Chiba Lotte Marines | 200 |
| Saves | Hisashi Takeda | Hokkaido Nippon-Ham Fighters | 32 |