Ouran High School Host Club (Japanese: 桜蘭高校ホスト部, Hepburn: Ōran Kōkō Hosuto Kurabu) is a Japanese manga series written and illustrated by Bisco Hatori. It was serialized in Hakusensha's LaLa magazine between the September 2002 and November 2010 issues. The series follows Haruhi Fujioka, a scholarship student at Ouran Academy, and the other members of the popular host club. The romantic comedy focuses on the relationships within and outside the Club.
The manga has been adapted into a series of audio dramas, an animated television series directed by Takuya Igarashi and produced by Bones, a Japanese television drama series, a 2012 live-action film adaptation, and a visual novel by Idea Factory. Two musical adaptations opened in 2022, with the final one scheduled for 2023.
By December 2011, Ouran High School Host Club had over 13 million copies in circulation.