Robert E. Harrill, or Harrell, was an American man also known as the Fort Fisher Hermit. He became a hermit in 1955, at the age of 62, having hitchhiked to Fort Fisher on the North Carolina coast from Morganton, North Carolina. He had previously been committed to a mental hospital in Morganton, after his marriage failed. Harrill settled in an abandoned World War II bunker set in a salt marsh beside the Cape Fear River in the Fort Fisher State Recreation Area.

Fort Fisher was a Confederate fort during the American Civil War. It protected the vital trading routes of the port at Wilmington, North Carolina, from 1861 until its capture by the Union in 1865. The fort was located on one of Cape Fear River's two outlets to the Atlantic Ocean on what was then known as Federal Point or Confederate Point and today is known as Pleasure Island. The strength of Fort Fisher led to its being called the Southern Gibraltar and the "Malakoff Tower of the South". The battle of Fort Fisher was the most decisive battle of the Civil War fought in North Carolina.