History's Strongest Disciple Kenichi is a Japanese manga by Syun Matsuena serialized in the weekly manga magazine Shōnen Sunday.
The first tankōbon was published on August 9, 2002. An anime adaptation by Tokyo Movie Shinsha aired from October 2006 to September 2007.
This manga is a remake of Tatakae! Ryōzanpaku Shijō Saikyō no Deshi (戦え!梁山泊 史上最強の弟子?, lit. Fight! Ryōzanpaku, History's Strongest Disciple), which was serialized in the monthly manga magazine Shōnen Sunday Super, publishing five tankōbon between 2000 and 2002.
History's Strongest Disciple Kenichi is revealed in the YOMI in School Arc to take place in the year 2002, presumably placing the start of the manga's setting in the year 2001.