Ohio - Significance region: Local
| Stoddart Block |
| Stoffel, Henry, Blacksmith Shop |
| Stokes, Benjamin A., House |
| Stoll, Adam J., House |
| Stone, Capt. Jonathan, House |
| Stone House, The |
| Stonehurst |
| Stoneman, Joseph, House |
| Stone's Block |
| Stone, Valerius C., House |
| Stormont, David, House |
| Story Mound |
| St. Patrick's Catholic Church |
| St. Patrick's Catholic Church |
| St. Paul AME Church |
| St. Paul Church Historic District |
| St. Paul Evangelical Lutheran Church and Parish Hall |
| St. Paul's Episcopal Church |
| St. Paul's Episcopal Church |
| St. Paul's Episcopal Church |
| St. Paul's Episcopal Church |
| St. Paul's Episcopal Church of East Cleveland |
| St. Paul's Reformed Church |
| St. Paul's Sunday School and Parish House |
| St. Peter Church |
| St. Peter Evangelical Lutheran Church |
| St. Peters Church |
| St. Peter's Evangelical Lutheran Church |
| St. Peter's Lick Run Historic District |
| St. Raphael Church |
| Stratford Methodist Episcopal Church |
| Stratton Flour Mill |
| Street, John, House |
| Streich Apartments |
| Strong, Jacob, House |
| Strong, John Stoughton, House |
| Strongsville Town Hall |
| St. Rosa Church |
| Stryker Depot |
| Sts. Peter & Paul Church and Rectory |
| St. Stanislaus Church |
| St. Stephen Church |
| St. Stephen Church and Rectory |
| St.Stephens' AME Church |
| St. Theodosius Russian Orthodox Cathedral |
| St. Thomas Aquinas Church |
| St. Thomas Episcopal Church |
| St. Timothy's Protestant Episcopal Church |
| Stuart's Opera House |
| Stubbs Earthworks |
| Studabaker-Scott House and Beehive School |
| Sturges, Susan, House |
| Stuyvesant Hall |
| Stuyvesant Motor Company Building |
| Sullivant, Lucas, Building |
| Summit Street Young Women's Christian Association (YWCA) |
| Sumner Street Bridge |
| Sunbury Tavern |
| Sunbury Town Hall |
| Sunny Knolls-Pape, Gordon E., House |
| Superior Avenue Historic District |
| Sutton House |
| Swetland House |
| Swift-Kinsman House |
| Sycamore-13th Street Grouping |
| Sycamore School |
| Symmes Mission Chapel |
| Talcott, Joseph, House |
| Tallmadge-Mithoff House |
| Tambling, Lucius T., House |
| Tangeman, John, House |
| Tanglewood |
| Tannehill, Capt. James Boggs, House |
| Tanner, William C., House |
| Tappan House |
| Tappan, Judge Abraham, House |
| Tavener-Sears Tavern |
| Tavern Club |
| Tawney Musser Farm |
| Taylor, Colonel Joseph, House |
| Taylor-Frohman House |
| Taylor Mansion-Lakehurst |
| Taylor Mound And Village Site |
| Taylorsville Canal Inn |
| Teakwood Heights Historic District |
| Tecumseh Building |
| Teegarden-Centennial Covered Bridge |
| Telephone Building, Old |
| Telling, William E., House |
| Templar-Farrell Motor Sales Building |
| Temple and Masonic Block Buildings |
| Temple on the Heights |
| Temple, The |
| Templin-Bradley Company |
| Terra Vista Archeological District |
| The Broer-Freeman Building |
| Theresa Building |
| The Ridge |
| Third Avenue and North High Historic District |
| Third Church of Christ Scientist |
Data from United States Park Service and Wikidata
