Blackberry Hill, also known as Mills House, is a historic plantation house located near Tryon, Polk County, North Carolina. It was built about 1847, and is a two-story, five-bay, Federal style frame dwelling. It has exterior gable end chimneys and flanking one-story wing additions. The front facade features a two-tier colonnaded porch.
It was added to the National Register of Historic Places in 1974.