| 1986 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Regular Season | |
| Season MVP | CL: Manabu Kitabeppu (HIR) PL: Hiromichi Ishige (SEI) |
| League Postseason | |
| CL champions | Hiroshima Toyo Carp |
| CL runners-up | Yomiuri Giants |
| PL champions | Seibu Lions |
| PL runners-up | Kintetsu Buffaloes |
| Japan Series | |
| Champions | Seibu Lions |
| Runners-up | Hiroshima Toyo Carp |
| Finals MVP | Kimiyasu Kudoh (SEI) |
The 1986 Nippon Professional Baseball season was the 37th season of operation for the league.