Wisconsin - Area of significance: Architecture
| Parkview Historic District |
| Payne-Craig House |
| Peacock Inn |
| Pearl and Grand Avenue Historic District |
| Pearsons Hall of Science |
| Peck, Clarence, Residence |
| Peck, George W., Row House |
| Peckham Junior High School |
| Peck, Walter L., House |
| Pendarvis |
| Pepin County Courthouse and Jail |
| Perry, Ralph P., House |
| Peshtigo Reef Light |
| Peters, George, House |
| Peterson, Seth, Cottage |
| Phillips High School |
| Phipps, William H., House |
| Physical Education Building/La Crosse State Normal School |
| Pierce, Carrie, House |
| Pierce County Courthouse |
| Pilgrim Family Farmstead |
| Pioneer Aztalan Site |
| Pioneer Block |
| Pittsburgh Plate Glass Enamel Plant |
| Plankinton-Wells-Water Street Historic District |
| Pleasant Hill Residential Historic District |
| Plum Grove Primitive Methodist Church |
| Polk County Courthouse |
| Pollock, William E., Residence |
| Polson, Mrs. Richard, House |
| Pomeroy, L. A., House |
| Pond, Daniel, Farmhouse |
| Portage Industrial Waterfront Historic District |
| Portage Retail Historic District |
| Portage Street Historic District |
| Porter, Walworth D., Duplex Residence |
| Port Washington Downtown Historic District |
| Port Washington Fire Engine House |
| Port Washington North Breakwater Light |
| Potawatomi State Park Observation Tower |
| Powell Place |
| Powers, Strange, House |
| Prairie Spring Hotel |
| Prairie Street Historic District |
| Prange, Eliza, House |
| Pratt, Hannah, House |
| Pratt, John A., House |
| Princeton Downtown Historic District |
| Pritzlaff, John, Hardware Company |
| Prospect Avenue Apartment Buildings Historic District |
| Prospect Avenue Mansions Historic District |
| Prospect Hill Historic District |
| Prospect Hill Historic District |
| Pruyn, Joel M., Block |
| Public School No. 27 |
| Public Sevice Building |
| Puerner Block-Breunig's Brewery |
| Pulaski Presbyterian Church Complex |
| Purdy, Willard D., Junior High and Vocational School |
| Putnam, Jane E., Memorial Chapel |
| Putney Block |
| Putney, Frank H., House |
| Pythian Castle Lodge |
| Quarles, Charles, House |
| Quisling Towers Apartments |
| Racine College |
| Racine County Courthouse |
| Racine Depot |
| Racine Elks Club, Lodge No. 252 |
| Racine Public Library |
| Randall Avenue Historic District |
| Randall, Brewster, House |
| Randall Park Historic District |
| Range Line Road Bridge |
| Rasey House |
| Rau, Charles, House |
| Read School |
| Reay Boathouse |
| Redwood Cottage |
| Reedsburg Brewery |
| Reformed Presbyterian Church of Vernon |
| Regez, Jacob, Sr., House |
| Reichert, John, Farmhouse |
| Resthaven Hotel |
| Rest Haven Motel |
| Reynolds-Weed House |
| Richards Hill Residential Historic District |
| Richardson-Brinkman Cobblestone House |
| Richardson Grout House |
| Richardson, Hamilton, House |
| Richter, Charles Samuel, House |
| Rickeman Grocery Building |
| Ridge Avenue Historic District |
| Rietz, Charles T. and Gertrude, House |
| Riggert, William, House |
| Rindfleisch Building |
| Ringling, Albrecht C., House |
| Ringling, Al, Theatre |
| Ringling, Charles, House |
| Rioux, Angeline Champeau, House |
Data from United States Park Service and Wikidata
