USS Philadelphia is a gunboat (referred to in contemporary documents as a gundalow or gondola) of the Continental Navy. She was constructed from July-August 1776 for service during the American Revolutionary War. Manned by Continental Army soldiers, she was part of a fleet under the command of General Benedict Arnold that fought against the British Royal Navy in the Battle of Valcour Island on Lake Champlain. Philadelphia was sunk during the battle on 11 October 1776.