Simoun (シムーン, Shimūn?) is an animated TV series that was broadcast in Japan in 2006. It ran for 26 weekly episodes from 3 April to 25 September.
A manga adaptation was published in three issues of Comic Yuri Hime. The manga shared the same characters and setting as the anime, but presented a different storyline. A second manga was serialised in Megami Magazine, with a radically different setting and a comic rather than serious and dramatic tone. There is also a two-volume light novel adaptation, which unlike the manga has a storyline close to that of the anime.
In May 2007, Simoun has been licensed for release in North America by Media Blasters.