All - Architectural style - Federal architecture
| Williams-Harrison House |
| Williams House |
| Williams, James, House |
| Williamsville |
| Willow Grove |
| Willow Mill Complex |
| Willows, The |
| Willson House |
| Wilson, Aaron, House |
| Wilson, Capt. John, House and Bates Ship Chandlery |
| Wilson-Clements House |
| Wilson, Levi, Tavern |
| Wilson, Mary Park, House |
| Wilson, Robert, House |
| Wilson, Sanford, House |
| Wilson, William J., House |
| Wilson-Winslow House |
| Wilson-Young House |
| Winchester House |
| Winder Building |
| Windsor |
| Windsor Forge Mansion |
| Wing, Joseph, Farm Complex |
| Wing-Northup House |
| Winn Farm |
| Winn, Suell, House |
| Winslow, Luther, Jr., House |
| Winsted |
| Winter, William, Stone House |
| Wirts House |
| Wisner, George T., House |
| Wister, Caspar & Rebecca, Farm |
| Witbeck, William A., House |
| Withers-Chapman House |
| Witt-Champe-Myers House |
| Woburn Manor |
| Wolcott, Benajah, House |
| Wolcott, Oliver, House |
| Wood, Ahijah, House |
| Woodbourne |
| Woodbridge, Thomas March, House |
| Woodburn |
| Woodbury House |
| Woodbury, Levi, Homestead |
| Woodfork |
| Wood Grove |
| Woodhouse House |
| Woodlands |
| Woodlawn |
| Woodlawn |
| Woodlawn |
| Wood Lawn |
| Woodlawn Farm |
| Woodman Institute |
| Wood Old Homestead |
| Woodrow, William, House |
| Woods, Archibald, House |
| Woodside |
| Woodside |
| Woodstock |
| Woodview |
| Woodward Homestead |
| Woodward, William, House |
| Worcester House |
| Worth, Gorham A., House |
| Wright, Dr. Uriel S., Office |
| Wright, Enoch, House |
| Wright, Rueben, House |
| Wright Tavern |
| Wyatt Hall |
| Wye House |
| Wyeth-Smith House |
| Wylie, Andrew, House |
| Wynn, James, House |
| Wyoming |
| Yellow Brick House |
| York-Gordon House |
| York Hill |
| Young, Benjamin and Mary, House |
| Young, Daniel, House |
| Young, James, House and Inn |
| Young, Joseph, House |
| Young, Robert, House |
| Youngs, Thomas, House |
| Young, William, House |
| Zeigler, John, Farm House |
| Zook, Jacob, House |
Data from United States Park Service and Wikidata
