| Year: | 2017 |
| Stage1champion: | Tohoku Rakuten Golden Eagles (2) |
| Stage1champion Games: | 77–63–3 (.550), 15.5 GB |
| Stage1runnerup: | Saitama Seibu Lions (1) |
| Stage1runnerup Games: | 79–61–3 (.563), 13.5 GB |
| Date1: | October 14–16 |
| Stage2champion: | Fukuoka SoftBank Hawks (4) |
| Stage2champion Games: | 94–49–0 (.657), 13.5 GA |
| Stage2runnerup: | Tohoku Rakuten Golden Eagles (2) |
| Stage2runnerup Manager: | Masataka Nashida |
| Stage2runnerup Games: | 77–63–3 (.550), 15.5 GB |
| Date2: | October 18–22 |
| Mvp: | Seiichi Uchikawa (SoftBank) |
| Previous Series: | 2016 Pacific League Climax Series |
| Previous Year: | 2016 |
| Next Series: | 2018 Pacific League Climax Series |
| Next Year: | 2018 |
The 2017 Pacific League Climax Series (PLCS) consisted of two consecutive series, Stage 1 being a best-of-three series and Stage 2 being a best-of-six with the top seed being awarded a one-win advantage. The winner of the series advanced to the 2017 Japan Series, where they competed against the 2017 Central League Climax Series winner. The top three regular-season finishers played in the two series. The PLCS began on with the first game of Stage 1 on October 14 and ended with the final game of Stage 2 on October 22.