All - Architectural style - Queen Anne style architecture in the United States
| Oakdene |
| Oakes Estate |
| Oak Knoll |
| Oaks, The |
| Oaks, The |
| Oakwold Plantation House |
| O'Brien, Richard, Three-Decker |
| Ochsner Hospital |
| Ockershausen, Henry, House |
| O'Connor House |
| O'Connor, James, Three-Decker |
| O'Dea House |
| Odeon Theater |
| Oft-Gordon House |
| Ogden, H. C., House |
| Old Central Fire Station |
| Oldham, James T., House |
| Old Superintendent's House, Tupelo Fish Hatchery |
| Old Town Historic District |
| Oliphant-Walker House |
| Oliver, Joseph D., House |
| Oliver, Thomas, House |
| Olive Street Historic District |
| Oller, Joseph J., House |
| Olness, John, House |
| On the Hill |
| Oradell Station |
| O'Rielly, J. H., House |
| Original Town Residential Historic District |
| Osage County Poorhouse |
| Osborn, William Lewis, House |
| Otis-Wyman House |
| Otto House |
| Overcarsh House |
| Owings, John Calvin, House |
| Packard, Moses, House |
| Packer, Alonzo Hamilton, House |
| Page-Gilbert House |
| Page House |
| Page, Thomas D., House |
| Paine, H. A., House |
| Palen, Frank A., House |
| Palmer, Charles, House |
| Palmer-Ferril House |
| Palmer, George W., House |
| Palmer, Judge Peter L. House |
| Pardee, Israel Platt, Mansion |
| Parker House |
| Parks, George H., House |
| Park Street Firehouse |
| Parmelee, Lou Ellen, House |
| Parr, Calvin W., House |
| Parry, John E., House |
| Pataskala Elementary School |
| Patrick, Marshall T., House |
| Patrick Ranch House |
| Patten, Charles H., House |
| Patterson-Hernandez House |
| Patterson, J.W., House |
| Paulding County Courthouse |
| Paulsen, Peter J., House |
| Pawling, Isaac, House |
| Pawtucket Congregational Church |
| Peabody, Francis Stuyvesant, House |
| Peachcroft |
| Pebbledene |
| Peck, Bradford, House |
| Peck, Cicero Goddard, House |
| Peery, Samuel and Pauline, House |
| Pellerin-Chauffe House |
| Pendrey, Arthur, Cottage |
| Pennsylvania Railroad Depot And Baggage Room |
| Pennsylvania Railroad Station at Wayne |
| Peppard, Joseph Grear, House |
| Perkins, James I. and Myrta Blake, House |
| Pernot, Dr. Henry S., House |
| "Pernot, Henry ""Harry"" Charles, House" |
| Perris Depot |
| Perry-Shockley House |
| Perry, Warren, House |
| Peter House |
| Petersburgh United Methodist Church |
| Peters, Edward C., House |
| Petersen, Max, House |
| Peters, John Claus, House |
| Peterson, Peter, Farmstead |
| Petoskey Grocery Company Building |
| Petrelli-DelPizzo House |
| Pettengill, C. F., House |
| Philbrook, John M., House |
| Phillips House |
| Picard, Israel, House |
| Piggot, Patrick, House |
| Pike, Gustavus and Sarah T., House |
| Pillow, Jerome Bonaparte, House |
| Pimter-O'Neil Rooming House |
| Pine Orchard Union Chapel |
| Pinschower, Simon, House |
| Pittock House |
| Pittsfield Universalist Church |
Data from United States Park Service and Wikidata
