Cornelius Harnett (April 10, 1723 – April 28, 1781) was an American merchant, farmer, and statesman from Wilmington, North Carolina.
He was a leading American Revolutionary statesman in the Cape Fear region, and a delegate for North Carolina in the Continental Congress from 1777 to 1779.
Cornelius Harnett is the namesake of Harnett County, North Carolina.