St. Stanislaus High School is a private primary and secondary school for boys located in Bandra, Mumbai, Maharashtra, India. Established in 1863 by German Jesuit priests as an orphanage, it has since evolved into a comprehensive institution serving both day students and boarders, with over 2,300 students from kindergarten to grade 10. The school is spread over a campus of approximately , making it one of the largest schools (by area) in Mumbai.
The following individuals have served as principal of the school:
The Stanislaus Ex-students Association was started by Fr. Joseph Casasayas SJ in 1936. It is a not-for-profit organization aimed at assisting alumni (ex-students and ex-staff members) to network.