The 1987 Japan Series was the championship series of Nippon Professional Baseball (NPB) for the 1987 season. The 38th edition of the Series, it was a best-of-seven playoff that matched the Central League champion Yomiuri Giants against the Pacific League champion Seibu Lions. The Lions came into the series as the defending champions, having won the 1986 Japan Series. This was the Giants' 24th appearance in the Japan Series and first since 1983. The Lions defeated the Giants, 4 games to 2, and won their second championship in a row and seventh overall.
It was the first year the 18-inning limit was implemented for championships.
Summary
| Game | Score | Date | Location | Attendance |
|
| 1 | Lions – 3, Giants – 7 | October 25 | Seibu Lions Stadium | 32,365[1] |
| 2 | Lions – 6, Giants – 0 | October 26 | Seibu Lions Stadium | 32,434[1] |
| 3 | Giants – 1, Lions – 2 | October 28 | Korakuen Stadium | 40,608[1] |
| 4 | Giants – 4, Lions – 0 | October 29 | Korakuen Stadium | 40,829[1] |
| 5 | Giants – 1, Lions – 3 | October 30 | Korakuen Stadium | 41,383[1] |
| 6 | Lions – 3, Giants – 1 | November 1 | Seibu Lions Stadium | 32,323[1] |