New York - Criteria: C (architecture/engineering)
| Sidewalk Clock at 522 5th Avenue, Manhattan |
| Sidney Historic District |
| Silk Street Bridge |
| Silliman Memorial Presbyterian Church |
| Sill Tenant House |
| Silver Bay Association Complex |
| Silver Lake Dam |
| Silver Lake Institute Historic District |
| Silvernail Homestead |
| Simmons, Alton, House |
| Simmons, Stephen, House |
| Simmons Stone House |
| Simonds, L.C., Adirondack Cabin |
| Simons General Store |
| Simpson Street Subway Station and Substation #18 (IRT) |
| Sinclair, Rooney & Co. Building |
| Sipperly Lown Farmhouse |
| Sisters of St. Dominic Motherhouse Complex |
| Sixteen Mile District |
| Skaneateles Historic District |
| Skene Memorial Library |
| Skinner, Timothy, House |
| Skinner-Tinkham House |
| Skinny House |
| Skoler, Louis and Celia, Residence, The |
| Slack Farmstead |
| Slate Quarry Road Dutch Barn |
| Sleepy Hollow Cemetery |
| Sliker Cobblestone House |
| Slingerlands, Albert, House |
| Slingerlands Historic District |
| Slinger-Sprong House |
| Sloan Cottage |
| Sloan, George B., Estate |
| Sloat House |
| Sloat, Jacob, House |
| Sloat's Dam and Mill Pond |
| Smallpox Hospital |
| Smart, Fred, House |
| Smith, Abigail Adams, Museum |
| Smith, Adon, House |
| Smith, Alexander, Carpet Mills Historic District |
| Smith, Almeron and Olive, House |
| Smith, Augustus A., House |
| Smith Clove Meetinghouse |
| Smith Cottage |
| Smith, Daniel, House |
| Smith-Ely Mansion |
| Smith Estate |
| Smithfield Presbyterian Church |
| Smithfield Presbyterian Church |
| Smith Flats |
| Smith, Fleming, Warehouse |
| Smith, Frank W., House |
| Smith, George J., House |
| Smith, Henry, Farmstead |
| Smith, Henry Tunis, Farm |
| Smith House, The |
| Smith, Jacob, House |
| Smith, John, Farm |
| Smith, John, House |
| Smith Metropolitan AME Zion Church |
| Smith, Obadiah, House |
| Smith Observatory and Dr. William R. Brooks House |
| Smith-Ransome Japanese Bridge |
| Smith, Reuel E., House |
| Smith-Ripley House |
| Smith-Rourke House |
| Smith's Grain and Feed Store |
| Smith's, Paul, Electric Light and Power and Railroad Company Complex |
| Smith, Stephen and Charles, House |
| Smith-Taylor Cabin |
| Smithville Valley Grange No. 1397 |
| Smyrna Elementary School |
| Smyrna Town Hall-Opera House |
| Snell, Levi, House |
| Snells Bush Church and Cemetery |
| Sniffen Court Historic District |
| Snow, C.W., & Company Warehouse |
| Snowy Mountain Fire Observation Station |
| Snyder Estate Natural Cement Historic District |
| Snyderville Schoolhouse |
| Society for the Lying-In Hospital |
| Society of Friends Hall |
| Sofia Warehouse |
| Sohmer and Company Piano Factory |
| Soho Historic District |
| Soldiers' Memorial Tower |
| Solvay Public Library |
| Somers Hamlet Historic District |
| Sommers, John P. House |
| Sonnenberg Gardens |
| Soundview Manor |
| Southampton Village Historic District |
| South Ann Street-Mill Street Historic District |
| South Bristol Grange Hall 1107 |
| South Bushwick Reformed Protestant Dutch Church Complex |
| South Congregational Church |
| South End-Groesbeckville Historic District |
| South Fallsburg Hebrew Association Synagogue |
Data from United States Park Service and Wikidata
