| 1989 NPB season | |
| League: | Nippon Professional Baseball |
| Sport: | Baseball |
| Season: | Regular Season |
| Mvp: | CL |
| Mvp Link: | Nippon Professional Baseball Most Valuable Player Award |
| Playoffs: | League Postseason |
| Conf1: | CL |
| Conf1 Link: | Central League |
| Conf1 Champ: | Yomiuri Giants |
| Conf1 Runner-Up: | Hiroshima Toyo Carp |
| Conf2: | PL |
| Conf2 Link: | Pacific League |
| Conf2 Champ: | Kintetsu Buffaloes |
| Conf2 Runner-Up: | Orix Braves |
| Finals: | Japan Series |
| Finals Link: | 1989 Japan Series |
| Finals Champ: | Yomiuri Giants |
| Finals Runner-Up: | Kintetsu Buffaloes |
| Finals Mvp: | Norihiro Komada (YOM) |
| Finals Mvp Link: | Japan Series Most Valuable Player Award |
| Seasonslist: | List of Nippon Professional Baseball seasons |
| Seasonslistnames: | NPB |
| Prevseason Link: | 1988 Nippon Professional Baseball season |
| Prevseason Year: | 1988 |
| Nextseason Link: | 1990 Nippon Professional Baseball season |
| Nextseason Year: | 1990 |
The 1989 Nippon Professional Baseball season was the 40th season of operation for the league.
| Central League[1] | G | W | L | T | Pct. | GB | |
|---|---|---|---|---|---|---|---|
| 130 | 84 | 44 | 2 | .656 | -- | ||
| 130 | 73 | 51 | 6 | .589 | 9.0 | ||
| 130 | 68 | 59 | 3 | .535 | 15.5 | ||
| 130 | 55 | 72 | 3 | .433 | 28.5 | ||
| 130 | 54 | 75 | 1 | .419 | 30.5 | ||
| 130 | 47 | 80 | 3 | .370 | 36.5 |
| Pacific League[2] | G | W | L | T | Pct. | GB | |
|---|---|---|---|---|---|---|---|
| 130 | 71 | 54 | 5 | .568 | -- | ||
| 130 | 72 | 55 | 3 | .567 | 0.0 | ||
| 130 | 69 | 53 | 8 | .566 | 0.5 | ||
| 130 | 59 | 64 | 7 | .480 | 11.0 | ||
| 130 | 54 | 73 | 3 | .425 | 18.0 | ||
| 130 | 48 | 74 | 8 | .393 | 21.5 |
See main article: 1989 Japan Series.