A special stage event at the Dengeki 20th Anniversary Festival announced that production on the second season of A Certain Scientific Railgun television anime series has been green-lit. The title of the second season is Toaru Kagaku no Railgun S ( A Certain Scientific Railgun S ).

The story and staff of the second season will be confirmed in the December issue of ASCII Media Works ' Monthly Comic Dengeki Daioh magazine on October 27.