| 2011 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Duration | April 12 – November 20 |
| Central League Pennant | |
| League champions | Chunichi Dragons |
| Runners-up | Tokyo Yakult Swallows |
| Season MVP | Takuya Asao (Chunichi) |
| Pacific League Pennant | |
| League champions | Fukuoka SoftBank Hawks |
| Runners-up | Hokkaido Nippon-Ham Fighters |
| Season MVP | Seiichi Uchikawa (SoftBank) |
| Climax Series | |
| CL champions | Chunichi Dragons |
| CL runners-up | Tokyo Yakult Swallows |
| PL champions | Fukuoka SoftBank Hawks |
| PL runners-up | Saitama Seibu Lions |
| Japan Series | |
| Champions | Fukuoka SoftBank Hawks |
| Runners-up | Chunichi Dragons |
| Finals MVP | Hiroki Kokubo (SoftBank) |
The 2011 Nippon Professional Baseball season is the 62nd season since the NPB was reorganized in 1950. The season was delayed by the Tohoku earthquake. The Tohoku Rakuten Golden Eagles, based in northern Japan, and coached by Senichi Hoshino, were particularly affected by the quake, as the Miyagi Baseball Stadium was badly damaged. [citation needed]
Because of energy concerns following the earthquake, NPB also imposed restrictions on games during the regular season. A three-hour-thirty-minute rule was imposed. If a game went past the 3:30 mark, regardless of inning, the inning in question would be the last inning. A game would be called should any blackout occur during the game. The 3:30 clock starts at the first pitch of the game and continues in case of any delay.
At the season's end, the Yokohama BayStars was renamed as Yokohama DeNA BayStars as the owner changes.