Washington - Area of significance: Architecture
| White River Mess Hall and Dormitory |
| White River Patrol Cabin |
| Whitman County Library |
| Whitman Elementary School |
| Whitten Block |
| Wilbur, Ralston and Sarah, House |
| Wilcox, Charles, House |
| Wilke Farmhouse |
| Wilkeson Arch |
| Wilkeson Community House |
| Wilkeson School |
| Willard Building |
| Williams, Hattie, House |
| Williams, Herbert, House |
| Williams, James and Corinne, House |
| Williams, Sidney, House |
| Wilson Creek State Bank |
| Wilson Hotel |
| Winchester Mountain Lookout |
| Windham Apartments |
| Winningham Farm |
| Winters, Frederick W., House |
| Women's Club |
| Women's University Club of Seattle |
| Woodinville School |
| Woodstock Farm |
| Woolrey-Koehler Hop Kiln |
| Woolworth, F.W., Company Store |
| Wreckage, The |
| Wright Park and Seymour Conservatory |
| W. T. PRESTON (snagboat) |
| Wurdemann, Harry Vanderbilt, House |
| Yakima Park Stockade Group |
| Ye College Inn |
| YMCA Building-Walla Walla |
| York Historic District |
| Young, Fred and Elizabeth, House |
| Young Women's Christian Association |
| Yuncker, John F., House |
| ZODIAC (schooner) |
Data from United States Park Service and Wikidata
