Florida - Criteria: C (architecture/engineering)
| St. John's Episcopal Church |
| St. Johns Light |
| St. John's Lighthouse |
| St. Joseph Catholic Mission Church |
| St. Joseph's Catholic Church |
| St. Joseph's Church Buildings |
| St Leo Abbey Historic District |
| St. Lucie High School |
| St. Luke Baptist Church |
| St. Luke's Episcopal Church and Cemetery, Old |
| St. Margaret's Episcopal Church and Cemetery |
| St. Mark's Episcopal Church |
| St. Mary's Church |
| St. Mary's Episcopal Church |
| St. Mary's Episcopal Church and Rectory |
| St. Michael's Creole Benevolent Association Hall |
| ST. NICHOLAS III (Sponge Diving Boat) |
| ST. NICHOLAS VI (Sponge Diving Boat) |
| Stockton-Curry House |
| Stockton-Lindquist House |
| Stovall House |
| St. Petersburg Public Library |
| St. Petersburg Woman's Club |
| Strickland-Herold House |
| St. Rita's Colored Catholic Mission |
| Studebaker Building |
| Sun Bright |
| Sundy, John and Elizabeth Shaw, House |
| Sunrise Theatre |
| Sunshine State Arch |
| Suwannee County Courthouse |
| Swearingen, John J., House |
| Tabby House |
| Taber Duplex |
| Talahloka |
| Taliaferro, T. C., House |
| Tallahassee Historic District Zones I And II |
| Tall Timbers Plantation |
| Tampa Bay Hotel |
| Tampa City Hall |
| Tampa Free Public Library, Old |
| Tampa Heights Historic District |
| Tampania House |
| Tampa Theater and Office Building |
| Tarpon Springs City Hall, Old |
| Tarpon Springs High School, Old |
| Tarpon Springs Historic District |
| Tarragona Tower |
| Taylor County Jail, Old |
| Taylor House |
| Taylor, Moses J., House |
| Temple Terrace Golf Course |
| Tenney House and Groveland Hotel |
| The Masonic Temple of Citrus, Lodge #18, F. and A.M. |
| Thiesen Building |
| "Thomas, Arden ""Doc"", House" |
| Thompson and Company Cigar Factory |
| Thompson Fish House, Turtle Cannery and Kraals |
| Thoms House |
| Thorpe, Alfred and Olive, Lustron House |
| Thursby, Louis P., House |
| Tice Grammer School |
| Tilden, Luther F., House |
| Tillman, G. V., House |
| Tinsman House |
| Title & Trust Company of Florida Building |
| Titusville Commercial District |
| Tooker House |
| Torreya State Park |
| Tourist Church |
| Towles, William H., House |
| Townsend Building |
| Townsend, James W., House |
| Townsend, James W., House |
| Trapper Nelson Zoo Historic District |
| Trapp Homestead |
| Treasure Hammock Ranch Farmstead |
| Triangle Inn |
| Trinity Episcopal Cathedral |
| Trinity Episcopal Church |
| Tuckahoe |
| Turkey Creek High School, Historic |
| Turnbull-Ritter House |
| Tuscawilla Park Historic District |
| Union Bank |
| Union Depot Hotel, Old |
| Union Railroad Station |
| United Methodist Church |
| United States Post Office and Court House |
| University of Florida Campus Historic District |
| Upper North Franklin Street Commercial District |
| URCA DE LIMA (shipwreck) |
| U.S. Arsenal-Officers Quarters |
| USCG Cutter DUANE |
| U.S. Coast Guard Headquarters, Key West Station |
| US Customs House and Post Office |
| US Naval Station |
| U.S. Post Office |
| U.S. Post Office |
| US Post Office |
Data from United States Park Service and Wikidata
