| Flat Knob | N Macon County at the head of Rhinehart Creek. |
| Flat Land Branch | rises in E central Avery County and flows S into Wilson Creek. |
| Flat Laurel Creek | rises in S Haywood County and flows NW into West Fork Pigeon River. |
| Flat Laurel Gap | on the Haywood-Transylvania county line between Big Bald and Little Bald Mountain. |
| Flat Mountain | S Jackson County between East Fork Chattooga River and Whitewater River. Also called Flattop Mountain. Alt. 3,931. |
| Flat Mountain | SE Macon County between Cullasaja River and Big Creek. |
| Flat River | is formed in S Person County by the junction of North Flat River and South Flat River. It flows SE into N Durham County and SE across the county to join Eno River in forming Neuse River. Appears on the Moseley map, 1733. |
| Flat River | community in NE Durham County served by post office, 1881-1903. |
| Flat River Township | S central Person County. |
| Flat Rock | mountain in E central Avery County. |