Cornehill is a historic home located at Parran, Calvert County, Maryland, United States.

The initials purportedly refer to Thelbert Freeland, a member of an influential family in northeastern Calvert County.

Outbuildings include slave quarters to the south of the house, and a tobacco barn with oak framing.

During the majority of the 18th century, the Mackall family, large Calvert County landowners, held Cornehill, or "Cornhill.

This article about a Registered Historic Place in Calvert County, Maryland is a stub.