| Witco Chemical | Cleveland | OH |
| Withrow High School | Cincinnati | OH |
| Withrow School | Cincinnati | OH |
| Witt | Cincinnati | OH |
| W.J. Scholl | Mineral Ridge | OH |
| W.J. Thomas | Shadyside | OH |
| W.M. Pattison Supply | Cleveland | OH |
| W M Powell | Cincinnati | OH |
| Woloham Lumber | Kettering | OH |
| Woodlawn Garage | Woodlawn | OH |
| Woodruff & Pausch Stone | Columbus | OH |
| Wood Shovel & Tool | Piqua | OH |
| Wood-Spencer | Cleveland | OH |
| Woodville Mall | Northwood | OH |
| Woolco Store | Toledo | OH |
| Woolson Spice | Toledo | OH |
| Wooster College | Wooster | OH |
| Wooster College | Canton | OH |
| Wooster Municipal Building | Canton | OH |
| Wooster Municipal Building | Wooster | OH |
| World Publishing | Cleveland | OH |
| Worley Brothers | Bainbridge | OH |
| Worthington High School | Worthington | OH |
| Worthington Methodist Church | Worthington | OH |
| Worthington Pump & Machinery | Elmwood Place | OH |
| W.P. Gibson Shop | Warren | OH |
| Wrenn Paper | Middletown | OH |
| W.R. Grace | Sharonville | OH |
| Wright Aeronautical | Lockland | OH |
| Wright Brothers & Company | Toledo | OH |
| Wright Construction | Dayton | OH |
| Wright-Patterson Air Force Base | Dayton | OH |
| Wrights Aeronautical | Evendale | OH |
| Wrights Cash & Carry Lumber | East Liverpool | OH |
| Wright State Campus | Dayton | OH |
| Wright Tool & Forge | Barberton | OH |
| Wright Wrench & Forging | Canton | OH |
| W.S. Carroll | Bellaire | OH |
| W.S. Lowe & Company | Lima | OH |
| W.S. Merrill | Reading | OH |
| Wspd Radio Broadcasting Studios | Toledo | OH |
| W.S. Tyler | Cleveland | OH |
| W.T. Burdell Trustee | Columbus | OH |
| wTe | Akron | OH |
| Wunderlich Fabricating | Bedford | OH |
| Wynn Oil | Cincinnati | OH |
| Wyoming Light, Water, Heat & Power | Wyoming | OH |
| Xcleve. Museum, Nat | Cleveland | OH |
| Xenia High School | Xenia | OH |
| YMCA | Cleveland | OH |
