(Missouri)
Thornfield is an unincorporated community in Ozark County, Missouri, United States. It is located 15 miles (24 km) northwest of Gainesville, on Route 95 at the Little North Fork of the White River on the edge of the Mark Twain National Forest between Wasola to the northeast and Longrun to the southwest. Hammond, the site of the historic Hammond Mill, lies on the Little North Fork 2.5 miles (4.0 km) southeast of Thornfield. Thornfield has a post office with ZIP code 65762.