List of Bleach episodes (season 12)

The episodes of the twelfth season of the Bleach anime series, released on DVD as the Arrancar: Decisive Battle of Karakura arc (破面・空座決戦篇), aired in Japan from March 31, 2009 to July 21, 2009. They are directed by Noriyuki Abe and produced by TV Tokyo, Dentsu, and Studio Pierrot. The 17-episode season is based on Tite Kubo's Bleach manga series. The plot continues shows the fight between Soul Society's group of Soul Reapers against Sōsuke Aizen's army of Arrancar, with the former defending Karakura Town, and the latter planning to use Karakura to invade and destroy Soul Society. The season moves on to auto-conclusive stories beginning with episode 227.

The season first aired from March 31, 2009 until July 21, 2009 on TV Tokyo in Japan. The English adaptation of the Bleach anime is licensed by Viz Media, which has yet to announce when the season will air. The first DVD compilation of the season containing the first four episodes was released on January 27, 2010. Three volumes have been released as of March 24, 2010.

The episodes use two pieces of theme music: one opening theme and one closing theme. The opening theme is "Shōjo S" (少女S) by Scandal. The ending theme is "Kimi wo Mamotte, Kimi wo Aishite" (君を守って 君を愛して) by Sambomaster.