| Third Creek | rises in E Alexander County and flows SE across Iredell County and into Rowan County, where it enters Fourth Creek. It is the third creek in a series of creeks crossed by early settlers moving W from Salisbury. Appears on the Collet map, 1770. |
| Third Creek | See Cleveland. |
| Third Creek | See Second Creek. |
| Third Fork Creek | rises in S Durham County and flows SW into New Hope Creek. |
| Thirty Foot Canal | E Washington County, extends NE between Lake Phelps and Scuppernong River. |
| Thomas Bay | S extension of Cawcaw Swamp in SW Brunswick County between its junctions with Little Cawcaw Swamp and Shingletree Swamp. |
| Thomas Branch | rises in SW Macon County and flows NW into Nantahala River. |
| Thomas Branch | rises in central Madison County and flows SW into Hopewell Branch. |
| Thomas Creek | rises in W Wake County and flows SE into Little Whiteoak Creek. |
| Thomas Knob | S Macon County between Pipe-track Gap and Watkins Creek. |