| Occoneechee Creek | rises in W Northampton County and flows S into Roanoke River. The name is probably from the Tutelo Indian word yuhkañ (man). |
| Occoneechee Neck | the W neck of Northampton County, is formed by a large bend in Roanoke River. |
| Occoneechee Township | SW Northampton County. |
| Ocean | community in W Carteret County served by post office, 1891-1927. |
| Ocean Isle Beach | town on the Atlantic Ocean, S Brunswick County. Inc. 1959. |
| Ochre Creek | rises in N Jackson County and flows W into Scott Creek. |
| Oconaluftee River | is formed in the Great Smoky Mountains in NE Swain County by the junction of Beech Flats Prong and Kephart Prong. For a part of its course, it forms the Jackson-Swain county line. It flows SE into Tuckasegee River. The name, long written as two words (Ocona Luftee), is from the Cherokee words Egwanulti or Egwani (river) and nulati or nuti (near; beside). The Cherokee town of Oconalufte, mentioned by explorer-naturalist William Bartram about 1775, was probably on the lower course of the river at present Birdtown. |
| Oconalufty Township | formerly in E Swain County but inc. into the limits of Charleston Township when it was enlarged between 1934 and 1940 with the establishment of Great Smoky Mountains National Park. |
| Ocracoke | community on Ocracoke Island, SE Hyde County. Settled in the seventeenth century. The name Ocracoke seems originally to have been Wococon, which appeared first on the White map, 1585. The Indian word apparently was waxkahikani, meaning "enclosed place," "fort," or "stockade," and it is believed that a fortified Indian village existed at the site. By 1676 the name Okok was used, and by 1709 it had developed into Occacock. See also Wococon Island. |
| Ocracoke Inlet | from the Atlantic Ocean into Pamlico Sound, lies between Ocracoke Island (Hyde County) on the N and Portsmouth Island (Carteret County) on the s. The pirate Blackbeard was killed in the vicinity in 1718. Once chief trade inlet for North Carolina. |