The Battle of the Severn was a skirmish fought on March 25, 1655, on the Severn River at Horn Point, across Spa Creek from Annapolis, Maryland, in what at that time was referred to as the Puritan settlement of "Providence", and what is now the neighborhood of Eastport. It was an extension of the conflicts that formed the English Civil War, pitting the forces of Puritan settlers against forces aligned with Lord Baltimore, then Lord Proprietor of the colony of Maryland. It has been suggested by Radmila May that this was the "last battle of the English Civil War."

Annapolis is the capital of the state of Maryland. It is the county seat of Anne Arundel County and its only incorporated city. Situated on the Chesapeake Bay at the mouth of the Severn River, 25 miles (40 km) south of Baltimore and about 30 miles (50 km) east of Washington, D.C., Annapolis forms part of the Baltimore–Washington metropolitan area. The 2020 census recorded its population as 40,812, an increase of 6.3% since 2010.