| Arm, The | an extension of Big Bald Mountain on the line dividing Unicoi County, Tenn., from Madison and Yancey Counties, N.C. |
| Armour | community in NE Columbus County. Named Amour (French, "love") for the Love family in the area, but through the years the spelling was changed. |
| Armstrong | former community in NW McDowell County on Threemile Creek. With the establishment of Little Switzerland, which see, 2 mi. nw, the community began to decline. |
| Armstrong Branch | rises in S Lincoln County and flows NE into Dellinger Branch. |
| Armstrong Creek | rises in NW McDowell County and flows E into North Fork [Catawba River]. |
| Arnold | community in W Davidson County near the headwaters of Swearing Creek. |
| Arnold Branch | rises in E Macon County and flows SW into Cullasaja River. |
| Arnold Knob | SE Mitchell County between North Toe River and Rose Creek. |
| Arnt | formerly a small community and site of Arnt Ferry over the Catawba River, NE Catawba County. Site now covered by waters of Lookout Shoals Lake. |
| Aromuskek Marshes | appear on the Ogilby map, 1671, in the E section of present Hyde County between Lake Mattamuskeet and Pamlico Sound. See also Aramuskeet. |