| Olive Hill Township | W central Person County. |
| Olive Hollow | W Watauga County, extends northward W of Laurel Creek. |
| Oliver | community in E Johnston County. |
| Oliver Reef | S Dare and E Hyde Counties in the waters of Pamlico Sound N of Hatteras Inlet. Presented by the state to the U.S. government in 1874 for use in naval target practice. Returned to the state in 1965. |
| Oliver's Crossroads | community in central Jones County. |
| Olivers | community in central Jones County. |
| Olivers Crossroads | community in S Catawba County. |
| Olivet | community in NW Caldwell County on Mulberry Creek. Named for Olivet Methodist Church, in turn named for biblical Mount Olivet or Mount of Olives. |
| Olivette | community in central Buncombe County. |
| Olivia | community in W Harnett County. Settled about 1865. Known as Rock Branch until 1913, when it was renamed to honor W. J. Olive, who in 1912 introduced cultivation of flue-cured tobacco there. |