Oak Bluffs is a town located on the island of Martha's Vineyard in Dukes County, Massachusetts, United States. The population was 5,341 at the 2020 United States Census. It is one of the island's principal points of arrival for summer tourists, and is noted for its "gingerbread cottages" and other well-preserved mid- to late-nineteenth-century buildings. The town has been a historically important center of African American culture since the eighteenth century.