The Roman Catholic High School of Philadelphia is a Catholic high school for boys in Philadelphia. It was founded by Thomas E. Cahill in 1890 as the first Catholic high school in the nation. The school is located at the intersection of Broad and Vine streets in Center City Philadelphia, and is managed by the Archdiocese of Philadelphia.

Center City includes the central business district and central neighborhoods of Philadelphia, Pennsylvania, United States. It comprises the area that made up the City of Philadelphia prior to the Act of Consolidation, 1854, which extended the city borders to be coterminous with Philadelphia County.