2004 Pacific League Playoffs

2004 Pacific League Playoffs
First stage
Team (Wins) Manager Season
Seibu Lions (2) Tsutomu Ito 74–58–1 (.560), 4.5 GB
Hokkaido Nippon-Ham Fighters (1) Trey Hillman 66–65–2 (.504), 12 GB
DatesOctober 1–3
Second stage
Team (Wins) Manager Season
Seibu Lions (3) Tsutomu Ito 74–58–1 (.560), 4.5 GB
Fukuoka Daiei Hawks (2) Sadaharu Oh 77–52–4 (.594), 4.5 GA
DatesOctober 6–11

The 2004 Pacific League Playoffs was a set of consecutive playoff series for the Pacific League of Nippon Professional Baseball (NPB) in the 2004 season. It began on October 1 and ended on October 11, with the top-three finishers of the PL participating in two series of games, with the first stage being a best-of-three series and the final stage being a best-of-five series. They were:

With the victory against the Hawks, the Lions advanced to the Japan Series. The Pacific League would be the only league with a playoff until 2007, which saw both the Central and Pacific have their top three teams compete in a playoff that is referred to as the Climax Series.