Gloria Dei Church, known locally as Old Swedes', is a historic church located in the Southwark neighborhood of Philadelphia, Pennsylvania, at 929 South Water Street, bounded by Christian Street on the north, South Christopher Columbus Boulevard (formerly Delaware Street) on the east, and Washington Avenue on the south. It was built between 1698 and 1700, making it the oldest church in Pennsylvania and second oldest Swedish church in the United States after Holy Trinity Church (Old Swedes) in Wilmington, Delaware.