Thornwell may refer to:
Thornwell, Louisiana, an unincorporated community in Jefferson Davis Parish Thornwell Orphanage, in Clinton, South Carolina James Robert Thornwell (1937-1984), US Army private unwittingly administered LSD by Army intelligence in 1961. James Henley Thornwell (1812–1862), American Presbyterian preacher and religious writer Sindarius Thornwell (born 1994), American College basketball player Thornwell Jacobs (1877–1956), educator, author, and Presbyterian minister
See also Thornwell–Presbyterian College Historic District, located in Clinton, Laurens County, South Carolina Thornwell-Elliott House, historic home located at Fort Mill, York County, South Carolina George Thornewell (1898–1986), English international footballer Thörnell, a surname