| Back Landing Creek | rises in the highlands of Indian Island, SE Camden County, and flows SE into North River. |
| Back Marsh | rises in N Duplin County and flows SW into Northeast Cape Fear River. |
| Back of Beyond | name given to far western counties by Horace Kephart in Our Southern Highlanders (1913). Derived from longtime inaccessibility of region. |
| Back Sound | between Shackleford Banks and Harkers Island in SE Carteret County. |
| Back Swamp | rises in W Robeson County and flows SE into Lumber River in central Robeson County. |
| Back Swamp | rises in NW Onslow County and flows SW into Duplin County, where it enters Cypress Creek. |
| Back Swamp | rises in NW Nash County and flows SE into Big Peachtree Creek. |
| Back Swamp Township | central Robeson County. |
| Backcountry | term used during the early settlement and colonial period for the vast interior of North Carolina, located away from the coastline and including both the modern-day Piedmont and Mountain regions. |
| Bad Branch | rises in E Macon County and flows SW into Big Creek. |