| 1980 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Regular Season | |
| Season MVP | CL: Koji Yamamoto (HIR) PL: Isamu Kida (NIP) |
| League Postseason | |
| CL champions | Hiroshima Toyo Carp |
| CL runners-up | Yakult Swallows |
| PL champions | Kintetsu Buffaloes |
| PL runners-up | Lotte Orions |
| Japan Series | |
| Champions | Hiroshima Toyo Carp |
| Runners-up | Kintetsu Buffaloes |
| Finals MVP | Jim Lyttle (HIR) |
The 1980 Nippon Professional Baseball season was the 31st season of operation for the league.