Archbishop Spalding High School is a private, Catholic co-educational high school located in Severn, Maryland, USA. It is located in the Roman Catholic Archdiocese of Baltimore. Most of its students live in Annapolis, Crownsville, Arnold, Pasadena, Severna Park, Crofton, Millersville, Glen Burnie, or Davidsonville in Anne Arundel County. Some also travel from southern Baltimore County, east Prince George's County and parts of Howard County.