Malvern Preparatory School, commonly referred to as Malvern Prep, is an independent, all-boys Catholic middle school and college preparatory high school in Malvern, Pennsylvania, within the Archdiocese of Philadelphia. The school is operated by Order of Saint Augustine and is a member of the Augustinian Secondary Education Association.

Malvern is a borough in Chester County, Pennsylvania, United States. Malvern is the terminus of the Main Line, a series of highly affluent Philadelphia suburbs located along the railroad tracks of the Pennsylvania Railroad. It is 19.4 miles (31.2 km) west of Philadelphia. The population was 3,419 at the 2020 census.