Fullmetal Alchemist: Brotherhood (Japanese: 鋼の錬金術師, Hepburn: Hagane no Renkinjutsushi) is an anime adaptation of the Fullmetal Alchemist manga by Hiromu Arakawa. Developed by Bones, the series is directed by Yasuhiro Irie and written by Hiroshi Ōnogi. Fullmetal Alchemist: Brotherhood is the second anime television series based on Fullmetal Alchemist, the first being 2003's Fullmetal Alchemist, as a 1/1 adaptation directly following the events of the manga. It was first announced in the manga series' 20th tankōbon volume. In Japan, it is differentiated from the 2003 series by the inclusion of the English language title. The series premiered on April 5, 2009 on MBS-TBS' Sunday 5:00 PM JST anime time block, replacing Mobile Suit Gundam 00, and ran weekly until airing its final episode on July 4, 2010. Voice actors Romi Park and Rie Kugimiya reprise their roles as main characters Edward and Alphonse Elric, respectively.
On March 20, 2009, it was announced that the English title of the series was Fullmetal Alchemist: Brotherhood and that it would receive its English language premiere on Animax Asia, with Japanese audio and English subtitles, from April 10, 2009 at 8:30 p.m, five days after its Japanese premiere. On April 3, 2009, Funimation announced they would stream English subtitled episodes four days after they air in Japan. Madman Entertainment would also stream it "within days" of the episodes airing in Japan. On February 14, 2010, the English dubbed version of the series began its run on Adult Swim.