The Hoffman Round Barn, also known as Gentry Round Barn, is a historic round barn and national historic district located near Wolftown, Madison County, Virginia. The district encompasses two contributing buildings, one contributing site and one other contributing structure. The barn was built in 1913. It is a 1 1/2 story, wood frame barn with 12 sides and a 12-sided standing-seam metal, mansard-like roof.