North Carolina - Criteria: A (event)
| Oates, Livingston, Farm |
| Oberlin Cemetery |
| Occoneechee Speedway |
| Oconaluftee Baptist Church |
| Oconaluftee Ranger Station |
| Ocracoke Historic District |
| Ocracoke Light Station |
| Odd Fellows Building |
| Odd Fellows Lodge |
| Odell-Locke-Randolph Cotton Mill |
| O'Kelly, Berry, Historic District |
| O'Kelly's Chapel |
| Old Bluff Presbyterian Church |
| Old Burying Ground |
| Old Chapel Hill Cemetery |
| Old East, University of North Carolina |
| Old Fort Commercial Historic District |
| Old Main, Pembroke State University |
| Old Neck Historic District |
| Old Orange County Courthouse |
| Old Richmond Schoolhouse and Gymnasium |
| Old Salem Historic District |
| Old White Church Cemetery |
| Old Wilkes County Jail |
| Old Wilson Historic District |
| Oliver-Morton Farm |
| Opera House-Starnes Jewelers Building |
| Orange Street School |
| Oregon Inlet Station |
| Orient Manufacturing Company-Chadwick-Hoskins No. 3 |
| Orton Plantation |
| Oteen Veterans Administration Hospital Historic District |
| Ottinger, Henry, House |
| Outen, R.F., Pottery |
| Overlook |
| Owen Family House and Cemetery |
| Owen-Harrison House |
| Oxford Historic District |
| Paisley-Rice Log House |
| Palmer Fire School |
| Palmer Memorial Institute Historic District |
| Palo Alto Plantation |
| Pantego Academy |
| Panther Branch School |
| Parham, Maria, Hospital |
| Parks-Cramer Company Complex, Former |
| Paschall-Daniel House |
| Patterson School Historic District |
| Patton Farm |
| Peace, John, Jr., House |
| Pearl Mill Village Historic District |
| Peebles House |
| Pee Dee Avenue Historic District |
| Pegram House |
| Pelletier House and Wantland Spring |
| Pembroke High School, Former |
| Pender County Courthouse |
| Pendergrass Building |
| Penderlea Homesteads Historic District |
| Penland Post Office and General Store |
| Penland School Historic District |
| Penn House |
| Pennington, Cicero, Farm |
| Penn, William, High School |
| Peoples Bank Building |
| Perquimans County Courthouse |
| Perry Farm |
| Perry School |
| Perry-Shepherd Farm |
| Person County Courthouse |
| Person-McGhee Farm |
| Peterson, John N., Farm |
| Pfeiffer Junior College Historic District |
| Phifer, John, Farm |
| Philanthropic Hall, Davidson College |
| Phoenix Masonic Lodge No. 8 |
| Piedmont Buggy Factory |
| Piedmont Wagon Company |
| Pierce, John M., House |
| Pilot Mill |
| Pine Crest Inn |
| Pine Gables |
| Pine Hall |
| Pinehurst Historic District |
| Pinehurst Race Track |
| Pine Street Creamery, (Former) |
| Pineview |
| Pineville Commercial Historic District |
| Pineville Mill Village Historic District |
| Pitt County Courthouse |
| Pittsboro Historic District |
| Pittsboro Masonic Lodge |
| Planters Building |
| Playmakers Theatre |
| Playmore-Bowery Road Historic District |
| Pleasant Grove Camp Meeting Ground |
| Pleasant Plains School |
| Pleasant Retreat Academy |
| Plymouth Historic District |
| Poindexter, H. D., Houses |
Data from United States Park Service and Wikidata
