Coffin Point Plantation, Historic plantation house in Frogmore, South Carolina, US

Coffin Point Plantation is a Sea Island plantation house in the Frogmore area of Beaufort County, South Carolina, built around 1801 on a tabby foundation of oyster shells and lime. A half-mile avenue of oaks leads to the house, which stands on land that once covered 1,120 acres.

Ebenezer Coffin, born in Boston in 1763, received 1,120 acres and 63 enslaved people from his father-in-law and had the house built on the property around 1801. By 1862, during the Civil War, 260 people were recorded as enslaved there. In the early 1890s James Donald Cameron, a Republican U.S. Senator from Pennsylvania and former Secretary of War, bought the house; Henry Adams described his visits to the Camerons there in The Education of Henry Adams. The plantation was listed on the National Register of Historic Places on August 28, 1975.

The house is named for Ebenezer Coffin, the Boston-born owner who had it built around 1801 on land and enslaved people received from his father-in-law. Henry Adams recorded his visits to the Camerons here in The Education of Henry Adams, a first-hand account of the household in the 1890s.

The house stands in the Frogmore area of Beaufort County, South Carolina, not on St. Helena Island. It is a private residence, so the half-mile avenue of oaks and the grounds are not open to visitors; the house can be seen from the public road. The nearest services are in Frogmore and Beaufort.

The half-mile avenue of oaks leading to the house predates most of the surrounding landscape and is the feature visitors most often remember. Henry Adams described his visits to the Camerons here in The Education of Henry Adams, leaving a written account of the house from a guest's perspective.