Illinois - Significance region: Local
| Weber, Howard K., House |
| Weber, Robert, Round Barn |
| Wee Haven |
| Weinrich, Christian F. |
| Weir, John, House |
| Weir, William S., Jr., House |
| Weisel, Andrew, House |
| Weister, Frederick, House |
| Welling-Everly Horse Barn |
| Wenner, Charles, House |
| Werner Brothers Storage Warehouse No. 6 |
| West Argyle Street Historic District |
| West Burton Place Historic District |
| West Chatham Bungalow Historic District |
| West Downtown Rockford Historic District |
| West End Historic District |
| Western Illinois State Normal School Building |
| Western Springs Water Tower |
| Westervelt Christian Church |
| West Frankfort City Hall |
| West Loop-LaSalle Street Historic District |
| West Loop-LaSalle Street Historic District |
| Westover Road Non-Commissioned Officers' Housing Historic District |
| West Park Neighborhood Historic District |
| West Pullman Elementary School |
| West Side Historic District |
| West Walnut Street Historic District |
| West Water Tower and Ground Storage Tank |
| Wheeler-Kohn House |
| Wheeler-Magnus Round Barn |
| White and Company's Goose Lake Stoneware Manufactury |
| White and Company's Goose Lake Tile Works |
| White Building |
| White Hall Foundry |
| White Hall Historic District |
| White, Louise, School |
| White Oak Hall |
| White Pines State Park Lodge and Cabins |
| White Place Historic District |
| White, W.E., Building |
| Whitney, Col. Nathan, House |
| Whitney, William, House |
| Wholesale Florists Exchange |
| Williams, James Robert, House |
| Williamson County Jail |
| Willits, Levi, House |
| Will Rogers Theatre and Commercial Block |
| Wilmette Village Center Historic District |
| Wilson, Judge Isaac, House |
| Wing Park Golf Course |
| Witwer House |
| Woman's Club of Evanston |
| Women's Gymnasium, University of Illinois at Urbana-Champaign |
| Women's Residence Hall-West Residence Hall, University of Illinois at Urbana-Champaign |
| Wooden Alley |
| Wood, Ernest M., Office and Studio |
| Woodland Cemetery |
| Woodlawn Farm |
| Woodstock Square Historic District |
| Wood-Tellkamp House |
| Wright, Dr. Charles M., House |
| Wright, Stephen, House |
| Wrightwood Bungalow Historic District |
| Yakel House and Union Brewery |
| Yale, The |
| YMCA Hotel |
| Yondorf Block and Hall |
| Yorkville School |
| Young, Joshua P., House |
| YWCA Building |
| Ziock Building |
| Zion Episcopal Church |
| Zoe Theatre |
Data from United States Park Service and Wikidata
