Gyosei Junior and Senior High School (暁星中学校・高等学校, Gyōsei Chūgakkō Kōtōgakkō) is a private Catholic junior and senior high school for boys in Fujimi, Chiyoda, Tokyo.

[1] Founded in 1888,[2] it is regarded as one of the country's most prestigious private schools.

After Pierre-Marie Osouf became the new Bishop of Tokyo, he convinced the Society of Mary (Marianists) that there was a need for Catholic schools in Japan.

[5] The order responded generously and sent American and French missionaries, who founded Gyosei High School in Tsukiji, Tokyo in 1888.

[6] The school was affected by the devastating 1923 Great Kantō earthquake and then World War II some twenty years later.