All - Constructed - 1840–1849
| Tilden, Samuel J., House |
| Tomlinson, Ephraim and Sarah, House |
| Town Linke Church and Cemetery |
| Trinity Episcopal Church |
| Trinity Methodist Church |
| Troy Meeting House |
| Truett, Alpheus, House |
| Turck, Christian, House |
| Tuttle House |
| Twain, Mark, Boyhood Home |
| Ulyatt, Abraham, House |
| Union Meetinghouse |
| United States Marine Hospital of Louisville |
| Upper Fells Point Historic District |
| Upper Paradise |
| US Custom House |
| U.S. Naval Academy |
| Utica State Hospital |
| Valley Cemetery |
| Virden-Patton House |
| Virginia Washington Monument |
| Waitt Brick Block |
| Walker Hall |
| Walsh, A., Stone House and Farm Complex |
| Walter, John, Farmstead |
| Wamsutta Mills |
| Warren, Nathan, House |
| Warrenton Historic District |
| Warren, William, Two Rivers House Site and McDougall, Peter, Farmstead |
| Washington Monument |
| Washington Place |
| Washington Square Historic District |
| Wave Hill |
| Waynesville Greek Revival Houses |
| Wayside House |
| Weaver, William, House |
| Webster, George, House |
| Weed, Justin, House |
| Weeks-Kimbrough House |
| Wehr Covered Bridge |
| Weidner Rock House |
| Wentz, Jacob, House |
| Wesleyan Methodist Church |
| Westend |
| West Luther Valley Lutheran Church |
| West Sister Island Light |
| West Ward School |
| Wetzell-Archbold Farmstead |
| Wheeling Suspension Bridge |
| White, Abiathar and Nancy, House |
| White Hall |
| Whitehall Farm |
| White Springs Historic District |
| Whitman-Belden House |
| Whitney Mansion |
| Williams, Abiathar King, House |
| Williams, Austin F., Carriagehouse and House |
| Williams, Charles, House |
| Williams, James, House |
| Wing's Neck Light |
| Winter Building |
| Woodrow Methodist Church |
| Workman Adobe |
| Worthen, Daniel, House |
| Wyoming Seminary |
| Yeager, John J., House |
Data from United States Park Service and Wikidata
