| 1983 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: | Seibu Lions |
| Conf2 Runner-Up: | Hankyu Braves |
| Finals: | Japan Series |
| Finals Link: | 1983 Japan Series |
| Finals Champ: | Seibu Lions |
| Finals Runner-Up: | Yomiuri Giants |
| Finals Mvp: | Takuji Ota (SEI) |
| Finals Mvp Link: | Japan Series Most Valuable Player Award |
| Seasonslist: | List of Nippon Professional Baseball seasons |
| Seasonslistnames: | NPB |
| Prevseason Link: | 1982 Nippon Professional Baseball season |
| Prevseason Year: | 1982 |
| Nextseason Link: | 1984 Nippon Professional Baseball season |
| Nextseason Year: | 1984 |
The 1983 Nippon Professional Baseball season was the 34th season of operation for the league.
| Central League[1] | G | W | L | T | Pct. | GB | |
|---|---|---|---|---|---|---|---|
| 130 | 72 | 50 | 8 | .590 | – | ||
| 130 | 65 | 55 | 10 | .542 | 6.0 | ||
| 130 | 61 | 61 | 8 | .500 | 11.0 | ||
| 130 | 62 | 63 | 5 | .496 | 11.5 | ||
| 130 | 54 | 69 | 7 | .439 | 18.5 | ||
| 130 | 53 | 69 | 8 | .434 | 19.0 |
| Pacific League[2] | G | W | L | T | Pct. | GB | |
|---|---|---|---|---|---|---|---|
| 130 | 86 | 40 | 4 | .683 | – | ||
| 130 | 67 | 55 | 8 | .549 | 17.0 | ||
| 130 | 64 | 59 | 7 | .520 | 20.5 | ||
| 130 | 52 | 65 | 13 | .444 | 29.5 | ||
| 130 | 52 | 69 | 9 | .430 | 31.5 | ||
| 130 | 43 | 76 | 11 | .361 | 39.5 |
See main article: 1983 Japan Series. Seibu Lions won the series 4–3.
| Game | Score | Date | Location | Attendance | |
|---|---|---|---|---|---|
| 1 | Lions – 6, Giants – 3 | October 29 | Seibu Lions Stadium | 32,954[3] | |
| 2 | Lions – 0, Giants – 4 | October 30 | Seibu Lions Stadium | 33,696 | |
| 3 | Giants – 5, Lions – 4 | November 1 | Korakuen Stadium | 40,279 | |
| 4 | Giants – 4, Lions – 7 | November 2 | Korakuen Stadium | 43,436 | |
| 5 | Giants – 5, Lions – 2 | November 3 | Korakuen Stadium | 43,500 | |
| 6 | Lions – 4, Giants – 3 | November 5 | Seibu Lions Stadium | 31,396 | |
| 7 | Lions – 3, Giants – 2 | November 7 | Seibu Lions Stadium | 33,242 |