All - Constructed - 1790–1799
| Stone, Ruth, House |
| Stony Point |
| Stratton, Gov. Charles C., House |
| Strong, Jedediah, House |
| Strong, John, House |
| Taft, Hon. Bazaleel, House |
| Talbot Hall |
| Taylor, Zachary, House |
| Terhune-Ranlett House |
| Thayer, Benjamin, House |
| Thomas-Wiley-Abbott Farmstead |
| Townley, James, House |
| Trinity Lutheran Church and Cemetery |
| Ulmer, George, House |
| Umpawaug District School |
| Upper Greenwich Friends Meetinghouse |
| Valley Lodge |
| Vickery, Capt. David, House |
| Wade, John, House |
| Ware Paper Mill |
| Washington Navy Yard (Boundary Increase) |
| Weeks, Barzillai, House |
| Weston, Samuel, Homestead |
| West School |
| Wheeler, Adin, House and Theodore F. Wheeler Wheelwright Shop |
| Whitehall |
| White Hall |
| White House |
| White, Warren, House |
| Whiting Homestead |
| Whitney-Farrington-Cook House |
| Wilson, William, House |
| Winkle, Jacob W., House |
| Wood, Ahijah, House |
| Woodard Hall |
| Woodside |
| Zion Lutheran Church |
Data from United States Park Service and Wikidata
