South Dakota - Significance region: Local
| Mount Theodore Roosevelt Monument |
| Mount Vernon City Auditorium |
| Mt. Moriah Masonic Lodge #155 |
| Mundt, John, Building |
| Municipal Building-City Hall |
| Murdo State Bank |
| Mystic Townsite Historic District |
| Nansen Store |
| Nelson, Maurice, House |
| Nelson, Ole, Barn |
| Nemo School House |
| New Effington Hospital |
| Newell Depot Bridge |
| Newell High School |
| Newhall, Chandler Gray and Mary Abbie, House and Homestead Shack |
| New Hope Farm Polygonal Barn |
| New Hope Farm Swine Barn |
| Nichols Funeral Home Building |
| Nick's Hamburger Shop |
| Nielson, L.P., Barn |
| Nigg, Louis, Barn |
| Nora Store |
| Norbeck-Nicholson Carriage House |
| North Canton School-District No. 12 |
| Norway Center Store |
| Oahe Addition Historic District |
| Odd Fellows Building |
| Ohlman-Shannon House |
| Old Cochrane Road Bridge |
| Old Fort Pierre School |
| Oldham Methodist Church |
| Old Main, Augustana Academy |
| Old St. Mary's Catholic Parish House |
| Old St. Wenceslaus Catholic Parish House |
| Olive Place |
| Olsen, Elias B., Ranch |
| Omdalen Barn |
| Opitz, Edbert and Josie, House |
| Orpheum Theatre |
| Ortman Hotel |
| Otho Mining District |
| Our Savior's Lutheran Church |
| Palisades Bridge |
| Parker Masonic Hall |
| Parmley, J. W., House |
| Parmley Land Office |
| Parmley-Pankow House |
| Patten Consolidated School |
| Patterson Homestead |
| Peace Valley Evangelical Church and Cemetery |
| Pearl Hotel |
| Pearson Cabin |
| Penmarch Place |
| Pennington County Courthouse |
| Perkins Congregational Church |
| Peterson-Loriks House |
| Pettigrew Barns |
| Pettigrew, R. F., and Tate, S. L., Building |
| Petty House |
| Pfutzenreuter, George, House |
| Phillips Block |
| Pickstown Fire and Police Station |
| Pierre Hill Residential Historic District |
| Pierre Masonic Lodge |
| Pig Tail Bridge |
| Pine Street Bridge |
| Pioneer Park Bandshell |
| Piper, Albert S., Homestead Claim Shanty |
| Plana School |
| Plumbing Supply Company |
| Pocahontas Schoolhouse |
| Pollock Depot |
| Pratt & Cjolme Building |
| Prentis Park |
| Presentation Children's Home |
| Pringle House |
| Puhlman Farm |
| Quamman, Ole, House |
| Queen Bee Mill |
| Quillian, Thomas, House |
| Quinn, Michael, House |
| Raesly House |
| Randolph, Dr. Fredrich A., Block |
| Ranger Station |
| Rapid City Carnegie Library |
| Rapid City Fruit Company |
| Rapid City Garage |
| Rapid City High School |
| Rapid City Historical Museum |
| Rapid City Laundry |
| Rapid City Masonic Temple |
| Rapid City West Boulevard Historic District |
| Raskob, Jacob and Elizabeth, Ranch |
| Raymond Farmers and Citizens State Bank |
| Redfield Carnegie Library |
| Redfield City Hall, Old |
| Redfield Light Plant and Fire Station |
| Reedy, J. W., House |
| Reese, Sheldon, Site (39HS23) |
| Reeve's Resort |
Data from United States Park Service and Wikidata
