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

Wynnewood is a suburban unincorporated community, located west of Philadelphia, straddling Lower Merion Township in Montgomery County, Pennsylvania and Haverford Township in Delaware County, Pennsylvania, United States.