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is an unincorporated hamlet in Morgan County in the U.S. state of West Virginia's Eastern Panhandle. The ZCTA for Great Cacapon's ZIP Code had a population of 1,379 at the 2000 census.
Great Cacapon takes its name from the Cacapon River which empties into the Potomac River to the town's east. It was originally known as
on the Baltimore and Ohio Railroad mainline when a post office was established here in 1848. In 1876, its name was changed to
to differentiate it from Little Cacapon which was also on the B&O mainline. It lies four miles down Cacapon Mountain from the Panorama Overlook along Cacapon Road (West Virginia Route 9) west of Berkeley Springs.