Hyouka (Japanese: 氷菓, Hepburn: Hyōka, literally "frozen dessert") is a 2001 Japanese mystery novel written by Honobu Yonezawa. It is the first volume of the Classic Literature Club (古典部, Koten-bu) series.
Five additional volumes have been published between 2002 and 2016. A manga adaptation drawn by Taskohna began serialization in the March 2012 issue of Kadokawa Shoten's Shōnen Ace. A 22-episode anime adaptation produced by Kyoto Animation and directed by Yasuhiro Takemoto aired from April 22 to September 16, 2012. A live-action film, Hyouka: Forbidden Secrets, directed by Mari Asato and starring Kento Yamazaki and Alice Hirose was released on November 3, 2017. At the request of his older sister, student Hotaro Oreki joins Kamiyama High School's Classic Literature Club to stop it from being abolished, joined by fellow members Eru Chitanda, Satoshi Fukube and Mayaka Ibara. The story is set in Kamiyama City, a fictional city in Gifu Prefecture that the author based on his real hometown of Takayama, also in Gifu. The fictional Kamiyama High School is based upon the real life Hida High School. They begin to solve various mysteries, both to help with their club and at Eru's requests.