| 1983 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Regular Season | |
| Season MVP | CL: Tatsunori Hara (YOM) PL: Osamu Higashio (SEI) |
| League Postseason | |
| CL champions | Yomiuri Giants |
| CL runners-up | Hiroshima Toyo Carp |
| PL champions | Seibu Lions |
| PL runners-up | Hankyu Braves |
| Japan Series | |
| Champions | Seibu Lions |
| Runners-up | Yomiuri Giants |
| Finals MVP | Takuji Ota (SEI) |
The 1983 Nippon Professional Baseball season was the 34th season of operation for the league.