is a Japanese shojo manga magazine published by ASCII Media Works (formerly MediaWorks) and is sold monthly. The magazine was originally published on December 9, 2006 as a special edition version of MediaWorks' now-defunct Dengeki Comic Gao! under the title as a quarterly publication. On March 21, 2008, with the release of the sixth volume, the magazine was transferred over as a special edition version of ASCII Media Works' shonen manga magazine Dengeki Daioh. On May 22, 2008, the magazine became independent of Dengeki Daioh and was published as volume one of Sylph as the July 2008 issue as a bimonthly publication. On May 22, 2010, the magazine started to be published monthly. Sylph is one of the few magazines originally published by MediaWorks not under the Dengeki naming line, such as with Dengeki Daioh, and Dengeki G's Magazine, the first of which being Active Japan in 1995 which has been discontinued since 1998.