GTO: Paradise Lost (Japanese: GTO パラダイス・ロスト, Hepburn: GTO Paradaisu Rosuto) is a Japanese manga series written and illustrated by Tooru Fujisawa. It is a sequel to the main Great Teacher Onizuka manga series. It has been published in Kodansha's Weekly Young Magazine since April 2014, with its chapters collected into nineteen tankōbon volumes as of July 2022.