Ehime Prefectural Mishima High School (愛媛県立三島高等学校, Ehime Kenritsu Mishima Kōtōgakkō) is a public high school located in Mishimachūō, Shikokuchūō, Ehime, Shikoku, Japan opened in 1923 as the Ehime Prefectural Mishima Middle School (愛媛県立三島中学校, Ehime Kenritsu Mishima Chūgakkō).