Wolf Guy (ウルフガイ Urufu Gai) is a Japanese manga series of two volumes published in 1970 by Bunkasha. Originally written by Kazumasa Hirai and illustrated by Hisashi Sakaguchi (坂口尚), the series has been readapted with a more violent and mature setting in 2007 by Yoshiaki Tabata and Yuuki Yugo. This new adaptation, also known as Wolf Guy: Ōkami no Monshō, has been released as twelve volumes by Akita Shoten. A live-action film adaptation, titled Ōkami no Monshō was released in 1973.