Wisconsin - Role: Building
| Second Ward School |
| Security Bank |
| Security Savings Bank |
| Senn, John L., House |
| Sensenbrenner, J. Leslie, House |
| Seven Gables |
| Seven Pines Lodge |
| Seventh Day Baptist Church |
| Severance-Pipe Farmstead |
| Sevona Cabin |
| Sexton's House |
| Sharrow, Frances Kurth, House |
| Shattuck, Franklyn C., House |
| Shawano Post Office |
| Shaw Farm |
| Shearer-Cristy House |
| Sheboygan County Courthouse |
| Sheboygan Falls School |
| Sheboygan Municipal Auditorium and Armory |
| Sheboygan Post Office |
| Sheboygan Theater |
| Sheboygan Valley Land and Lime Company |
| Sheeley House |
| Shekey, Albert and Mary, House |
| Shelton, William and Mary, Farmstead |
| Sheridan Apartment Building |
| Sherman House |
| Sherry, Henry, House |
| Sherwood Point Light Station |
| Shoop Building |
| Shopiere Congregational Church |
| Shorecrest Hotel |
| Shorewood Village Hall |
| Siegner, George V., House |
| Sign of the Willows |
| Silurian Mineral Springhouse |
| Silver Dome Ballroom, The |
| Simmons, Gilbert M., Memorial Library |
| Simmons Island Beach House |
| Simonds 10-Sided Barn |
| Single, Benjamin, House |
| Sivyer, Fred, House |
| Sixth Church of Christ, Scientist |
| Skumsrud, Nils, House |
| Slaymaker, Stephen, House |
| Sloan, William P., House |
| Smiley, Samuel, House |
| Smith, Adam and Mary, House |
| Smith and Meadows Store Buildings |
| Smith, Camillia, House |
| Smith, Charles R., House |
| Smith, Daniel, House |
| Smith, Francis West, House |
| Smith, Henry Spencer, House |
| Smith, Hiram, House |
| Smith, J.B., House and Granary |
| Smith, John, House |
| Smith, Lloyd R., House |
| Smith, Richard C., House |
| Smith School |
| Smith, T. C., House |
| Smith Valley School |
| Sniteman, Charles C. and Katharyn, House |
| Solliday, Albert F., House |
| Soo Line Depot |
| Soo Line Depot |
| Soper, Dr. Joseph and Olivia, House |
| South Branch Library |
| South Greenville Grange No. 225 |
| South Hall, River Falls State Normal School |
| South Milwaukee Passenger Station |
| South Milwaukee Post Office |
| Southport Beach House |
| South School |
| Sparta Free Library |
| Sparta High School |
| Sparta Masonic Temple |
| Spellman Granite Works |
| Spencerian Business College |
| Spensley Farm |
| Sperling, Frederick, House |
| Spooner-Haight Farmstead |
| Spring Creek School |
| Spring Green Restaurant |
| Springstead |
| Square D Company-Industrial Controller Division |
| St. Agnes Convent and School |
| St. Andrew's Church |
| St. Andrews, Frank, House |
| Stanelle, Gottlieb and Beata, Farmhouse |
| Stark-Clint House |
| Star Theatre |
| State Bank of Ladysmith |
| State Bank of Spring Green |
| State Bank of Wisconsin |
| State Historical Society of Wisconsin |
| State Office Building |
| St. Augustine Catholic Church and Cemetery |
| St. Augustine Church |
| St Croix County Courthouse |
Data from United States Park Service and Wikidata
