North Carolina - Area of significance: Architecture
| Norburn Terrace |
| Norfolk Southern Passenger Station |
| Northampton County Courthouse Square |
| North Carolina Agricultural Experiment Station Cottage |
| North Carolina Central University |
| North Carolina Electrical Power Company Electric Generating Plant |
| North Carolina Executive Mansion |
| North Carolina School for the Blind and Deaf Dormitory |
| North Carolina School for the Deaf Historic District |
| North Carolina School for the Deaf: Main Building |
| North Carolina State Capitol |
| North Carolina State Fair Commercial & Education Buildings |
| North Charlotte Historic District |
| North Cherry Street Historic District |
| North Cherry Street Historic District |
| North Durham-Duke Park District |
| North Green Street-Bouchelle Street Historic District |
| North Long Street-Park Avenue Historic District |
| North Main Avenue Historic District |
| North Main Street Historic District |
| North Main Street Historic District |
| North Main Street Historic District |
| North Market Street Historic District |
| Northside Historic District |
| North Smithfield Historic District |
| North Third Avenue Historic District |
| North Union Street Historic District |
| North Washington Avenue Workers' House |
| Norwood Park Historic District |
| Norwood School |
| Nowell-Mayerburg-Oliver House |
| Nu-Wray Inn |
| Oak City Christian Church |
| Oak Crest Historic District |
| Oakforest |
| Oak Grove |
| Oak Island Life Saving Station |
| Oaklana |
| Oakland |
| Oakland Plantation |
| Oakland Plantation |
| Oak Lawn |
| Oakmont |
| Oak Plain Presbyterian Church |
| Oak Ridge Military Academy Historic District |
| Oak View |
| Oakwood Historic District |
| Oakwood Historic District |
| Oakwood Historic District |
| Oaky Grove |
| Oates, John A., House |
| Oates, Livingston, Farm |
| O'Brien, William Thomas, House |
| Occidental Life Insurance Company Building |
| Oconaluftee Ranger Station |
| Ocracoke Historic District |
| Ocracoke Light Station |
| Odd Fellows Building |
| Odd Fellows Lodge |
| Odell-Locke-Randolph Cotton Mill |
| O'Hanlon Building |
| O'Kelly, Berry, Historic District |
| O'Kelly's Chapel |
| Old Bluff Presbyterian Church |
| Old Brick House |
| Old Davidson County Courthouse |
| Old Fort Commercial Historic District |
| Old German Baptist Brethern Church |
| Old Neck Historic District |
| Old Orange County Courthouse |
| Old Salem Historic District |
| Old South Mebane Historic District |
| Old Town Plantation |
| Old Wilkes County Jail |
| Old Wilson Historic District |
| Oliver-Morton Farm |
| Oneida Cotton Mills and Scott-Mebane Manufacturing Company Complex |
| One Plaza Center |
| Opera House-Starnes Jewelers Building |
| Orange Street School |
| Orient Manufacturing Company-Chadwick-Hoskins No. 3 |
| Orr, Charles E., House |
| Orton Plantation |
| Oteen Veterans Administration Hospital Historic District |
| Ottari Sanitarium |
| Ottinger, Henry, House |
| Outen, R.F., Pottery |
| Overcarsh House |
| Overlook |
| Owen Family House and Cemetery |
| Owen-Harrison House |
| Oxford Historic District |
| Page-Walker Hotel |
| Page, Williamson, House |
| Paisley-Rice Log House |
| Palmer-Marsh House |
| Palo Alto Plantation |
| Pantego Academy |
| Parker, Francis, House |
| Parker, James H., House |
Data from United States Park Service and Wikidata
