Wisconsin - Area of significance: Architecture
| Welty, Daniel and Catherine Barn |
| Wemyss Building |
| Werner, Dr. Nels, House |
| West Allis Post Office |
| West Bay Club |
| West Bend Chicago and North Western Depot |
| West Bend Downtown Historic District |
| West Bend Post Office |
| West Center-North 32nd Industrial Historic District |
| West, Deacon, Octagon House |
| West Fifth Street-West Sixth Street Historic District |
| West, Gen. Francis H., House |
| West Hill Residential Historic District |
| West Lawn Heights Historic District |
| West Madison Depot, Chicago, Milwaukee, and St. Paul Railway |
| West Main Street Historic District |
| West Main Street Historic District |
| West Milwaukee Street Historic District |
| West Mitchell Street Commercial Historic District |
| Weston-Babcock House |
| West Park Street Historic District |
| West Prospect Avenue Historic District |
| West Second Street Historic District |
| West Side Commercial Historic District |
| West Side School |
| West St. Paul Avenue Industrial Historic District |
| West Washington-North Hi-Mount Boulevards Historic District |
| Weyenberg Shoe Factory |
| White, F. F., Block |
| White Limestone School |
| Whitewater Passenger Depot |
| Whitewater Post Office |
| Whiting, Frank, Boathouse |
| Whitman-Belden House |
| Whorton, John Hart, House |
| Wick, Michael, Farmhouse and Barn |
| Wiedenbeck-Dobelin Warehouse |
| Willard and Fern Tompkins House |
| Williams, Frank J., House |
| Williams Free Library |
| Williams, William G. and Anne, House |
| Wilmanor Apartments |
| Wilmarth, Lewis C. and Caroline, House |
| Wilmarth School |
| Windway |
| Wingra Park Historic District |
| Wing, William C., House |
| Winnebago County Courthouse |
| Winslow, George F., House |
| Wisconsin Avenue Historic District |
| Wisconsin Avenue Historic District |
| Wisconsin Consistory Building |
| Wisconsin Industrial School for Boys |
| Wisconsin National Life Insurance Building |
| Wisconsin Pavilion |
| Wisconsin Power and Light Berlin Power Plant |
| Wisconsin State Capitol |
| Wisconsin State Prison Historic District |
| Wisconsin State Reformatory |
| Wisconsin Telephone Company Building |
| Wisconsin Wagon Company Factory |
| Wolff-Jung Company Shoe Factory |
| Woman's Club of Wisconsin |
| Wood County Courthouse |
| Woodland Hotel |
| Woodruff, Jacob, House |
| Wright, Duey and Julia, House |
| Wright, Ely, House |
| Wright, Razy and John, House |
| Wyman-Rye Farmstead |
| Wyoming Valley School |
| Wywialowski, John and Anna, Farmstead |
| Yanke, Louis, Saloon |
| Yates, Florence, House |
| Yawkey, Cyrus C., House |
| Yawkey, William H., Boathouse |
| Yorkville #4 School |
| Young, John, House |
| Younglands |
| Young Men's Christian Association Building |
| Zachow, William, Farmstead |
| Zahn, Albert, House |
| Zahn, August, Balcksmith Shop and House |
| Zeisler, George, Building |
| Zimmer, Johann, Farmhouse |
| Zion Congregational Church |
| Zion Evangelical Lutheran Church |
| Zion Evangelical Lutheran Church and Parsonage |
| Zion Lutheran Church |
| Zion Lutheran Church |
| Zirbel-Hildebrandt Farmstead |
Data from United States Park Service and Wikidata
