| 2018 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Duration | March 30 – November 3 |
| Number of games | 143 |
| Number of teams | 12 |
| Central League Pennant | |
| League champions | Hiroshima Toyo Carp |
| Runners-up | Tokyo Yakult Swallows |
| Season MVP | Yoshihiro Maru (Toyo) |
| Pacific League Pennant | |
| League champions | Saitama Seibu Lions |
| Runners-up | Fukuoka SoftBank Hawks |
| Season MVP | Hotaka Yamakawa (Seibu) |
| Climax Series | |
| CL champions | Hiroshima Toyo Carp |
| CL runners-up | Yomiuri Giants |
| PL champions | Fukuoka SoftBank Hawks |
| PL runners-up | Saitama Seibu Lions |
| Japan Series | |
| Champions | Fukuoka SoftBank Hawks |
| Runners-up | Hiroshima Toyo Carp |
| Finals MVP | Takuya Kai (SoftBank) |
The 2018 Nippon Professional Baseball season was the 69th season since the NPB was reorganized in 1950.