Waccamaw River Warehouse Historic District is a national historic district located at Conway in Horry County, South Carolina. It includes three contributing buildings: a steamer terminal (ca. 1880), warehouse (ca. 1890), and tobacco warehouse (ca. 1900). These buildings illustrate the evolution of utilitarian structures at the end of the 19th century, documenting the shift from heavy-timber braced-frame structural members to smaller-member, balloon framing with multiple diagonal bracing and the use of a clerestory for additional light. They are the last extant warehouses in Conway associated with the commercial trade on the Waccamaw River.