| 1966 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Central League Pennant | |
| League champions | Yomiuri Giants |
| Runners-up | Chunichi Dragons |
| Season MVP | Shigeo Nagashima (YOM) |
| Pacific League Pennant | |
| League champions | Nankai Hawks |
| Runners-up | Nishitetsu Lions |
| Season MVP | Katsuya Nomura (NAN) |
| Japan Series | |
| Champions | Yomiuri Giants |
| Runners-up | Nankai Hawks |
| Finals MVP | Isao Shibata (YOM) |
The 1966 Nippon Professional Baseball season was the 17th season of operation of Nippon Professional Baseball (NPB).