Cocoon (コクーン, Kokūn) is a Japanese manga series written and illustrated by Machiko Kyō.

It was serialized in Akita Shoten's josei manga magazine Elegance Eve from March 2009 to May 2010.

Written and illustrated by Machiko Kyō, Cocoon was serialized in Akita Shoten's josei manga magazine Elegance Eve from March 26, 2009 to May 27, 2010.

[2][3] The series is the first part of Kyō's trilogy of manga about war.

[4] A single tankōbon volume that consists of the series' chapters and a side-story was released on April 17, 2015.