Third Junior & Senior High School of Nihon University

Third Junior & Senior High School of Nihon University (日本大学第三中学校・高等学校, Nihon Daigaku Daisan Chūgakkō Kōtōgakkō) is a junior and senior high school in Machida, Tokyo, affiliated with Nihon University.

It first opened in Akasaka in Tokyo City in 1929. In 1976 it moved to Machida. It began admitting both boys and girls in 1987; previously it only admitted male students.