| 1973 NPB season | |
| League: | Nippon Professional Baseball |
| Sport: | Baseball |
| Season2: | Central League Pennant |
| League Champs2: | Yomiuri Giants |
| Second Place2: | Hanshin Tigers |
| Mvp2: | Sadaharu Oh (YOM) |
| Mvp Link2: | Nippon Professional Baseball Most Valuable Player Award |
| Season3: | Pacific League Pennant |
| League Champs3: | Hankyu Braves |
| Second Place3: | Kintetsu Buffaloes |
| Mvp3: | Katsuya Nomura (NAN) |
| Mvp Link3: | Nippon Professional Baseball Most Valuable Player Award |
| Finals: | Japan Series |
| Finals Link: | 1973 Japan Series |
| Finals Champ: | Yomiuri Giants |
| Finals Runner-Up: | Nankai Hawks |
| Finals Mvp: | Tsuneo Horiuchi (YOM) |
| Finals Mvp Link: | Japan Series MVP Award |
| Seasonslist: | List of Nippon Professional Baseball seasons |
| Seasonslistnames: | NPB |
| Prevseason Link: | 1972 Nippon Professional Baseball season |
| Prevseason Year: | 1972 |
| Nextseason Link: | 1974 Nippon Professional Baseball season |
| Nextseason Year: | 1974 |
The 1973 Nippon Professional Baseball season was the 24th season of operation of Nippon Professional Baseball (NPB).
| Team | G | W | L | T | GB | |||
|---|---|---|---|---|---|---|---|---|
| 1 | Yomiuri Giants | 130 | 66 | 60 | 4 | .524 | — | |
| 2 | Hanshin Tigers | 130 | 64 | 59 | 7 | .520 | 0.5 | |
| 3 | Chunichi Dragons | 130 | 64 | 61 | 5 | .512 | 1.5 | |
| 4 | Yakult Atoms | 130 | 62 | 65 | 3 | .488 | 4.5 | |
| 5 | Taiyo Whales | 130 | 60 | 64 | 6 | .484 | 5.0 | |
| 6 | Hiroshima Toyo Carp | 130 | 60 | 67 | 3 | .472 | 6.5 | |
| Team | G | W | L | T | 1st half rank | 2nd half rank | |||
|---|---|---|---|---|---|---|---|---|---|
| 1st half winner | Nankai Hawks | 130 | 68 | 58 | 4 | .540 | 1 | 3 | |
| 2nd half winner | Hankyu Braves | 130 | 77 | 48 | 5 | .616 | 3 | 1 | |
| 3 | Lotte Orions | 130 | 70 | 49 | 11 | .588 | 2 | 2 | |
| 4 | Taiheiyo Club Lions | 130 | 59 | 64 | 7 | .480 | 4 | 5 | |
| 5 | Nittaku Home Flyers | 130 | 55 | 69 | 6 | .444 | 5 | 3 | |
| 6 | Kintetsu Buffaloes | 130 | 42 | 83 | 5 | .336 | 6 | 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.
Nankai Hawks won the series 3-2.
| Game | Score | Date | Location | |
|---|---|---|---|---|
| 1 | Hawks – 4, Braves – 2 | October 19 | Osaka Stadium | |
| 2 | Hawks – 7, Braves – 9 | October 20 | Osaka Stadium | |
| 3 | Braves – 3, Hawks – 6 | October 22 | Hankyu Nishinomiya Stadium | |
| 4 | Braves – 13, Hawks – 1 | October 23 | Hankyu Nishinomiya Stadium | |
| 5 | Braves – 1, Hawks – 2 | October 25 | Hankyu Nishinomiya Stadium |
See main article: 1973 Japan Series. Yomiuri Giants won the series 4-1.
| Game | Score | Date | Location | Attendance | |
|---|---|---|---|---|---|
| 1 | Hawks – 4, Giants – 3 | October 27 | Osaka Stadium | 27,027[1] | |
| 2 | Hawks – 2, Giants – 3 | October 28 | Osaka Stadium | 28,135 | |
| 3 | Giants – 8, Hawks – 2 | October 30 | Korakuen Stadium | 34,713 | |
| 4 | Giants – 6, Hawks – 2 | October 31 | Korakuen Stadium | 38,270 | |
| 5 | Giants – 5, Hawks – 1 | November 1 | Korakuen Stadium | 37,761 |