| 1980 NPB season | |
|---|---|
| League | Nippon Professional Baseball |
| Sport | Baseball |
| Regular season | |
| Season MVP | CL: Koji Yamamoto (HIR) PL: Isamu Kida (NIP) |
| League postseason | |
| CL champions | Hiroshima Toyo Carp |
| CL runners-up | Yakult Swallows |
| PL champions | Kintetsu Buffaloes |
| PL runners-up | Lotte Orions |
| Japan Series | |
| Champions | Hiroshima Toyo Carp |
| Runners-up | Kintetsu Buffaloes |
| Finals MVP | Jim Lyttle (HIR) |
The 1980 Nippon Professional Baseball season was the 31st season of operation for the league.
| Central League [1] | G | W | L | T | Pct. | GB |
|---|---|---|---|---|---|---|
| Hiroshima Toyo Carp | 130 | 73 | 44 | 13 | .624 | – |
| Yakult Swallows | 130 | 68 | 52 | 10 | .567 | 6.5 |
| Yomiuri Giants | 130 | 61 | 60 | 9 | .504 | 14.0 |
| Yokohama Taiyo Whales | 130 | 59 | 62 | 9 | .488 | 16.0 |
| Hanshin Tigers | 130 | 54 | 66 | 10 | .450 | 20.5 |
| Chunichi Dragons | 130 | 45 | 76 | 9 | .372 | 30.0 |
| Pacific League [2] | G | W | L | T | Pct. | 1st half ranking | 2nd half ranking |
|---|---|---|---|---|---|---|---|
| Kintetsu Buffaloes | 130 | 68 | 54 | 8 | .557 | 2 | 1 |
| Lotte Orions | 130 | 64 | 51 | 15 | .557 | 1 | 3 |
| Nippon-Ham Fighters | 130 | 66 | 53 | 11 | .555 | 2 | 2 |
| Seibu Lions | 130 | 62 | 64 | 4 | .492 | 6 | 4 |
| Hankyu Braves | 130 | 58 | 67 | 5 | .464 | 4 | 5 |
| Nankai Hawks | 130 | 48 | 77 | 5 | .384 | 5 | 6 |
The Pacific League teams with the best first and second-half records met in a best-of-five playoff series to determine the league representative in the Japan Series.
Kintetsu Buffaloes won the series 3–0.
| Game | Score | Date | Location |
|---|---|---|---|
| 1 | Orions – 1, Buffaloes – 4 | October 15 | Kawasaki Stadium |
| 2 | Orions – 2, Buffaloes – 4 | October 16 | Kawasaki Stadium |
| 3 | Buffaloes – 13, Orions – 4 | October 18 | Osaka Stadium |
Hiroshima Toyo Carp won the series 4–3.
| Game | Score | Date | Location | Attendance |
|---|---|---|---|---|
| 1 | Carp – 4, Buffaloes – 6 | October 25 | Hiroshima Municipal Stadium | 29,037 [3] |
| 2 | Carp – 2, Buffaloes – 9 | October 26 | Hiroshima Municipal Stadium | 29,668 [3] |
| 3 | Buffaloes – 3, Carp – 4 | October 28 | Osaka Stadium | 17,371 [3] |
| 4 | Buffaloes – 0, Carp – 2 | October 29 | Osaka Stadium | 21,254 [3] |
| 5 | Buffaloes – 6, Carp – 2 | October 30 | Osaka Stadium | 22,287 [3] |
| 6 | Carp – 6, Buffaloes – 2 | November 1 | Hiroshima Municipal Stadium | 29,297 [3] |
| 7 | Carp – 8, Buffaloes – 3 | November 2 | Hiroshima Municipal Stadium | 29,952 [3] |