The 2008 Saitama Seibu Lions season was the 59th season of the Saitama Seibu Lions franchise.
The Lions played their home games at Seibu Dome in the city of Tokorozawa, Saitama as members of Nippon Professional Baseball's Pacific League.
Seibu finished the season in first place with a record of 76–64–4, winning the team its 21st PL pennant and qualifying them for the Climax Series.
In the 2008 Pacific League Climax Series, the Lions defeated the Hokkaido Nippon-Ham Fighters in the Second Stage and went on to win the 2008 Japan Series, its thirteenth, as well as the 2008 Asia Series.
Thursday, March 20, 2008 vs. Orix Buffaloes[3] Infielders Coaches Nippon Life Monthly MVP Award[7] Best Nine Award[8] Climax Series Second Stage MVP Japan Series MVP Matsutaro Shoriki Award Mitsui Golden Glove Award[9] All-Star Series selections[10] JA Zen-Noh Go-Go Awards[11]