Dengeki Daioh
A side-story manga series illustrated by Motoi Fuyukawa, titled "A Certain Scientific Railgun", started serialization in the April 2007 issue of "Dengeki Daioh". As of October 2020, 16 volumes have been released. Its spin-off, titled "", was serialized in "Dengeki Daioh" from April 27, 2017 to July 27, 2020. It was published in four volumes. A second side-story manga series illustrated by Arata Yamaji, titled "A Certain Scientific Accelerator", was serialized in "Dengeki Daioh" from December 27, 2013 to July 27, 2020. It was published in twelve volumes. A third side-story manga series illustrated by Nankyoku Kisaragi, titled , began serialization from August 27, 2019 to March 26, 2020, the same day ASCII Media Works published the first volume through their magazine "Dengeki Daioh". A fourth side-story manga series illustrated by Yasuhito Nogi, titled , began serialization in "Comic Newtype" website on July 27, 2021.