| Year: | 2010 |
| Stage1champion: | Chiba Lotte Marines (2) |
| Stage1champion Games: | 75–67–2 (.528), 2.5 GB |
| Stage1runnerup: | Saitama Seibu Lions (0) |
| Stage1runnerup Games: | 78–65–1 (.545), 0 GB |
| Date1: | October 9–10 |
| Stage2champion: | Chiba Lotte Marines (4) |
| Stage2champion Manager: | Norifumi Nishimura |
| Stage2champion Games: | 75–67–2 (.528), 2.5 GB |
| Stage2runnerup: | Fukuoka SoftBank Hawks (3) |
| Stage2runnerup Games: | 76–63–5 (.547), 0 GA |
| Date2: | October 14–19 |
| Mvp: | First Stage: Tomoya Satozaki (Lotte) Final Stage: Yoshihisa Naruse (Lotte) |
| Previous Series: | 2009 Pacific League Climax Series |
| Previous Year: | 2009 |
| Next Series: | 2011 Pacific League Climax Series |
| Next Year: | 2011 |
The 2010 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 2010 Japan Series, where they competed against the 2010 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 9 and ended with the final game of Stage 2 on October 19.