| 1951 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Central League Pennant | |
| League champions | Yomiuri Giants |
| Runners-up | Nagoya Dragons |
| Season MVP | Tetsuharu Kawakami (YOM) |
| Pacific League Pennant | |
| League champions | Nankai Hawks |
| Runners-up | Nishitetsu Lions |
| Season MVP | Kazuto Yamamoto (NAN) |
| Japan Series | |
| Champions | Yomiuri Giants |
| Runners-up | Nankai Hawks |
| Finals MVP | Fukashi Minamimura (YOM) |
The 1951 Nippon Professional Baseball season was the second season of operation of Nippon Professional Baseball (NPB). 1951 saw the best season in terms of winning percentage in NPB history, with the Nankai Hawks going 72-24-8, good enough for a .750 winning percentage, on their way to their first Japan Series appearance in franchise history. The Yomiuri Giants would defeat the Nankai Hawks in the Japan Series 4 games to 1, marking the first of 22 Japan Series championships for the Giants.