J. Eastburn Barn is a historic barn located near Newark, New Castle County, Delaware. It was built about 1809, and is a bi-level, stone structure with a frame front wall and arecessed stable wall. It is constructed of light-colored fieldstone with large, roughly dressed, rectangular fieldstone quoins. The barn measures 37 feet by 52 feet. It was added to the National Register of Historic Places in 1986.