Indiana - Area of significance: Architecture
| Territorial Capitol of Former Indiana Territory |
| Test Building |
| Thawley, Joseph & Lucinda, House |
| The Buckingham |
| THI and E Interurban Depot-Substation |
| Thiebaud Farmstead |
| Third St. Joseph County Courthouse |
| Thomas, Amon Clarence, House |
| Thomas, Andrew, House |
| Thompson, Dr. George W., House |
| Thompson-Ray House |
| Thompson, William N., House |
| Thornhurst Addition |
| Tide Water Pumping Station |
| Tippecanoe County Courthouse |
| Tipton County Courthouse |
| Tipton County Jail and Sheriff's Home |
| Tobey-Normington House |
| Tomlinson, George Washington, House |
| Toner Historic District |
| Tousley, Henry, House |
| Tower Building |
| Tower Hotel |
| Town Hall (Castle Hall) |
| Town of Crows Nest Historic District |
| TPA Park |
| Traders Point Eagle Creek Rural Historic District |
| Trinity Episcopal Church |
| Trinity Episcopal Church & Parish House |
| Trippett-Glaze-Duncan-Kolb Farm |
| Tryon Farm |
| Turkey Run State Park |
| Turrell, Salmon, Farmstead |
| Twelve Points Historic District |
| Tyson United Methodist Church |
| Ulen Historic District |
| Union Christian College |
| Union Church and Cemetery, Old |
| Union City Commercial Historic District |
| Union City Public Library |
| Union City School |
| Union County Courthouse |
| University Courts Historic District |
| University of Notre Dame: Main and South Quadrangles |
| Upper Main Street Historic District |
| U.S. Arsenal (Arsenal Technical High School) |
| U.S. Court House and Federal Office Building |
| U.S. Courthouse and Post Office |
| US Post Office and Courthouse |
| US Post Office-Brazil |
| Valparaiso Downtown Commercial District |
| Valparaiso University Chapel of the Resurrection |
| Van Arsdel, William C., House |
| Van Buren Terrace Historic District |
| Vance-Tousey House |
| Van Cleave Flats |
| Vandalia Methodist Episcopal Church and Vandalia School |
| VanHuys, Andrew B., Round Barn |
| Van Nuys Farm |
| Van Reed Farmstead |
| Varsity, The |
| Veedersburg Clover Leaf Route Depot |
| Vehslage, George H., House |
| Venoge Farmstead |
| Vera and the Olga |
| Veraestau |
| Vermillion County Courthouse |
| Vermillion County Jail and Sheriff's Residence |
| Vernon Historic District |
| Versailles Courthouse Square Historic District |
| Versailles School and Tyson Auditorium |
| Vevay Historic District |
| Victory Court Historic District |
| Victory Noll-St. Felix Friary Historic District |
| Victory Theater and Hotel Sonntag |
| Vienna |
| Vigo County Courthouse |
| Villa North Historic District |
| Vincennes Fortnightly Club |
| Vincennes Historic District |
| Vinegar Hill Historic District |
| Violett-Martin House and Gardens |
| Violett, William N., House |
| Votaw, Jonas, House |
| Vurpillat's Opera House |
| Wabash Avenue-East Historic District |
| Wabash Avenue-West Historic District |
| Wabash Railroad Depot |
| Wabash Township Graded School |
| Wagoner-Ayres House |
| Walden, Micajah, House |
| Waldron-Beck House and Carriage House |
| Walker Field Shelterhouse |
| Walker, Madame C. J., Building |
| Walkerton Historic District |
| Walnut Street Historic District |
| Walnut Street Historic District |
| Walnut Street Historic District |
| Ward, James H., House |
| Ward Township District No. 5 School |
Data from United States Park Service and Wikidata
