| 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.
| Central League [1] | G | W | L | T | Pct. | GB |
|---|---|---|---|---|---|---|
| Yomiuri Giants | 130 | 72 | 50 | 8 | .590 | – |
| Hiroshima Toyo Carp | 130 | 65 | 55 | 10 | .542 | 6.0 |
| Yokohama Taiyo Whales | 130 | 61 | 61 | 8 | .500 | 11.0 |
| Hanshin Tigers | 130 | 62 | 63 | 5 | .496 | 11.5 |
| Chunichi Dragons | 130 | 54 | 69 | 7 | .439 | 18.5 |
| Yakult Swallows | 130 | 53 | 69 | 8 | .434 | 19.0 |
| Pacific League [2] | G | W | L | T | Pct. | GB |
|---|---|---|---|---|---|---|
| Seibu Lions | 130 | 86 | 40 | 4 | .683 | – |
| Hankyu Braves | 130 | 67 | 55 | 8 | .549 | 17.0 |
| Nippon-Ham Fighters | 130 | 64 | 59 | 7 | .520 | 20.5 |
| Kintetsu Buffaloes | 130 | 52 | 65 | 13 | .444 | 29.5 |
| Nankai Hawks | 130 | 52 | 69 | 9 | .430 | 31.5 |
| Lotte Orions | 130 | 43 | 76 | 11 | .361 | 39.5 |
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] |
| 3 | Giants – 5, Lions – 4 | November 1 | Korakuen Stadium | 40,279 [3] |
| 4 | Giants – 4, Lions – 7 | November 2 | Korakuen Stadium | 43,436 [3] |
| 5 | Giants – 5, Lions – 2 | November 3 | Korakuen Stadium | 43,500 [3] |
| 6 | Lions – 4, Giants – 3 | November 5 | Seibu Lions Stadium | 31,396 [3] |
| 7 | Lions – 3, Giants – 2 | November 7 | Seibu Lions Stadium | 33,242 [3] |