Long Island is an unincorporated community in Campbell County, Virginia, United States. Long Island is located along the Roanoke River (also known as the Staunton River) east-southeast of Altavista.
The main road through the community is Virginia Secondary Route 761 (Long Island Road), and the community is almost entirely agricultural. A former Norfolk and Western Railway line runs through the community on the northeast bank of the Staunton River. A boat ramp exists south of VSR 761.
Green Hill was listed on the National Register of Historic Places in 1969.