| 1973 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Central League Pennant | |
| League champions | Yomiuri Giants |
| Runners-up | Hanshin Tigers |
| Season MVP | Sadaharu Oh (YOM) |
| Pacific League Pennant | |
| League champions | Hankyu Braves |
| Runners-up | Kintetsu Buffaloes |
| Season MVP | Katsuya Nomura (NAN) |
| Japan Series | |
| Champions | Yomiuri Giants |
| Runners-up | Nankai Hawks |
| Finals MVP | Tsuneo Horiuchi (YOM) |
The 1973 Nippon Professional Baseball season was the 24th season of operation of Nippon Professional Baseball (NPB).