| Foscoe | community in SW Watauga County on Watauga River. Alt. 2,969. |
| Foster | community in SE Person County served by post office, 1892-1910. |
| Foster Cove | N Graham County between Carringer Gap and Bee Creek. |
| Foster Creek | rises in NE Madison County and flows SW into Big Laurel Creek. |
| Foster Creek Township | former township in N central Madison County, now township no. 16. |
| Foster Knob | S Macon County between Ash Flat Branch and Rockyface Mountain. |
| Foster Mill Creek | rises in NW Henderson County and flows SE into Mills River. |
| Foster Mountain | central Polk County N of Columbus. Also called Chocolate Drop Mountain. Alt. 1,500. |
| Foster Ridge | S Macon County parallel to Ash Flat Branch. |
| Foster's Mill Creek | See Sweeten Creek. |