Osaka Tōin Junior and Senior High School (Japanese: 大阪桐蔭中学校・高等学校, Hepburn: Ōsaka Tōin Chūgakkō, Kōtōgakkō) is a private co-educational junior and senior high school located in Daitō City, Osaka Prefecture, Japan. The high school was founded in 1983 by Osaka Sangyo University.