St. Charles Borromeo Seminary

Saint Charles Borromeo Seminary is a Roman Catholic seminary in Ambler, Pennsylvania, that is under the jurisdiction of the Archdiocese of Philadelphia. The oldest Catholic institution of higher learning in the Philadelphia region, the seminary is named after Cardinal Charles Borromeo, an Italian saint from the Counter-Reformation era of the late 1500s.

Saint Charles offers a Bachelor of Arts degree in philosophy program to prepare seminarians for the priesthood. It also has a School of Theology that offers graduate courses in theology for anyone and a School of Diaconal Formation for men wanting to become permanent deacons.

Founded in 1832 in Philadelphia, the school moved to its campus in the Overbrook section of Philadelphia in 1871. Saint Charles moved again in 2024 to a new campus in Ambler, Pennsylvania.