Thomas Petters Carnes (1762 in Bladensburg, Maryland – May 5, 1822 in Milledgeville, Georgia) was an American lawyer and politician from Franklin County, Georgia. He served as a colonel in the Maryland Line during the American Revolution and received bounty land in Franklin County for his service. He served in the Georgia House of Representatives at Milledgeville as a state court judge, and represented Georgia in the United States House of Representatives from 1793 until 1795. Carnesville, Georgia, is his namesake. Although he considered his home to be Athens in Clarke County (created from Franklin County), he died in Milledgeville and is buried there at Memory Hill Cemetery.