Virginia - Role: Building
| Oak Crest |
| Oakdale |
| Oakdene |
| Oak Forest |
| Oak Grove |
| Oak Grove |
| Oak Grove |
| Oak Hill |
| Oak Hill |
| Oak Hill |
| Oak Hill |
| Oak Hill |
| Oakland |
| Oakland Grove Presbyterian Church |
| Oak Lawn |
| Oak Lawn |
| Oakley |
| Oakley |
| Oakley |
| Oakley Farm |
| Oakley Hill |
| Oakridge |
| Oak Spring Farm |
| Oaks, The |
| Oaks, The |
| Oaks, The |
| Oakton Trolley Station |
| Oatlands |
| Odd Fellows Hall |
| Odd Fellows Hall |
| Office Hall |
| Old Chapel |
| Old Christiansburg Industrial Institute |
| Old Courthouse |
| Old Custom House |
| Old Denton |
| Old Dominion Bank Building |
| Old Donation Church |
| Old Fauquier County Jail |
| Old Hotel |
| Old Isle of Wight Courthouse |
| Old Jail of Caroline County |
| Old Main |
| Old Mansion |
| Old Merchants and Farmers Bank Building |
| Old Norfolk City Hall |
| Old Point Comfort Lighthouse |
| Old Portlock School #5 |
| Old Prince Edward County Clerk's Office |
| Old Providence Presybterian Church |
| Old Providence Stone Church |
| Old Rectory |
| Old Roanoke County Courthouse |
| Old Russell County Courthouse |
| Old Stone Church |
| Old Stone Church |
| Old Stone House |
| Old Stone House |
| Old Stone Tavern |
| Old Town Hall and School |
| Old Turner Place |
| Olive Branch Missionary Baptist Church |
| Olive Hill |
| Oliver Chilled Plow Works Branch House |
| Olivet Presbyterian Church |
| On the Hill |
| Opequon Presbyterian Church |
| Orange County Courthouse |
| Orange High School |
| Orange Springs |
| Orkney Springs Hotel |
| Otterburn |
| Outlaw, Samuel D., Blacksmith Shop |
| Pace-King House |
| Page County Courthouse |
| Pamplin Pipe Factory |
| Panorama |
| Pantops Farm |
| Paradise |
| Park Gate |
| Parrish Hill Rosenwald School |
| Parr, Royster C., House |
| Patrick County Courthouse |
| Patton Mansion |
| Paul, Peter, House |
| Paul's Ottobine Mill |
| Paxton |
| Paxton House |
| Paxton Place |
| Peabody Building of the Peabody-Williams School |
| Peacock-Salem Launderers and Cleaners |
| Peale, Jonathan, House |
| Pear Valley |
| Pembroke Manor |
| Penn-Wyatt House |
| Pentagon, The |
| People's Bank of Eggleston, The |
| Periwinkle Cottage |
| Perry Hill |
| Persinger House |
Data from United States Park Service and Wikidata
