White's Ferry, originally Conrad's Ferry, is an inactive cable ferry service that carried cars, bicycles, and pedestrians across the Potomac River between Loudoun County, Virginia and Montgomery County, Maryland, and is the last one of its kind to cross the Potomac. The location offered fishing services and water recreation including canoeing. It transported between 600 and 800 customers daily until its operations were suspended indefinitely in 2020 due to a legal dispute over use of its Virginia landing.