Ohio - Area of significance: Commerce
| Uptown Toledo Historic District |
| Uptown Westerville Historic District |
| Urbana Monument Square Historic District |
| Van Rooy Coffee Company Building |
| Variety Store Building and Theatre |
| Village Hobby Shop |
| Vistula Historic District |
| Wadsworth Downtown Historic District |
| Walhounding Canal Lock No. 9 |
| Wallace Farm |
| Wapakoneta Commercial Historic District |
| Warren Commercial Historic District |
| Warsaw Avenue Historic District |
| Washington Court House Commercial Historic District |
| Water Street Commercial Buildings |
| Waterville Commercial District |
| Watt-Groce-Fickhardt House |
| Waverly Canal Historic District |
| Wayne County Courthouse District |
| Waynesville Main Street Historic District |
| Wellington Center Historic District |
| Wellington Historic District |
| Wells Building |
| Wells-Clark-Strouss House |
| Werner Company Building |
| West 25th Street-Detroit Avenue Historic District |
| Western Reserve Building |
| West Fourth Street Historic District |
| West Main Street District |
| West Side Market |
| West Sister Island Light |
| Wheeling and Lake Erie Railroad Depot |
| Wheeling Avenue Historic District |
| Wichman's Grocery |
| Wick Building |
| Wiles, Perry, Grocery Company |
| Williams, Henry Harrison, House |
| Wilmington Commercial Historic District |
| Wilson Feed Mill |
| Winders Motor Sales Company |
| Windsor Corners District |
| Woodland Avenue and West Side Railroad Powerhouse |
| Wood Old Homestead |
| Worthington Manufacturing Company Boardinghouse |
| W.P. SNYDER, JR. (steamboat) |
| Wright Cycle Company-Wright and Wright Printing Offices |
| Wright, Horace, House |
| Yellow Springs Historic District |
| Yost Tavern |
| Young, Thomas F., House |
| Zettler Grocery and Hardware |
| Zimmerly House |
| Zoar Historic District |
| Zollinger, S., Company Building |
Data from United States Park Service and Wikidata
