A Certain Magical Index
 A Certain Magical Index (とある魔術の禁書目録(インデックス) Toaru Majutsu no Indekkusu) is a Japanese light novel series written by Kazuma Kamachi and illustrated by Kiyotaka Haimura which has been published by ASCII Media Works under their Dengeki Bunko imprint since April 2004. Yen Press have licensed the novels in North America. A manga adaptation by Chuya Kogino began serialization in Monthly Shōnen Gangan from May 2007. J.C.Staff produced two 24-episode anime series between 2008 and 2011.