| Barrett Chemical | Cleveland | OH |
| Barrett Chemical | Struthers | OH |
| Barth - Clevite | Cleveland | OH |
| Barth - McNeil | Cleveland | OH |
| Bartholomew City Hospital | Columbus | OH |
| Bartlett Brothers | Cleveland | OH |
| Bartlett Snow & Pacific Fabricators | Cleveland | OH |
| BASF | Greenville | OH |
| Basic Engineering | Fostoria | OH |
| Basic Engineering | Maple Grove | OH |
| Basic Engineering | Bettsville | OH |
| Basic Oxygen Furnace | Cleveland | OH |
| Basic Refractories | Maple Grove | OH |
| Basic Science Building | Cincinnati | OH |
| Battelle Memorial Institute | Columbus | OH |
| Bayer | Addyston | OH |
| Bay Shore Power Plant | Toledo | OH |
| Bay Shore Power Plant | Oregon | OH |
| Bayview Hospital | Bay Village | OH |
| Bay View Treatment Plant | Toledo | OH |
| Bay West | Middletown | OH |
| Beach Enameling | Coshocton | OH |
| Beach Street Heating | Akron | OH |
| Beans Ferry | Martins Ferry | OH |
| Bearfoot Sole | Wadsworth | OH |
| Beaver Creek Board Of Education | Beavercreek | OH |
| Beaver Remmer Plant | Dayton | OH |
| Bechtel | Lima | OH |
| Bechtel | Ashtabula | OH |
| Bechtol, Carney & Company | Toledo | OH |
| Becker, Barnes & Becker Rendering | Bryan | OH |
| Becker Seidel | Cleveland | OH |
| Beckett Paper | Hamilton | OH |
| Beckman | Cleveland | OH |
| Bedford Heating | Bedford Heights | OH |
| Bedford High School | Bedford | OH |
| Beekman "A" Housing Project | Cincinnati | OH |
| Beerman Office Building | Dayton | OH |
| Belfonti | Canton | OH |
| Belfont Iron Works | Ironton | OH |
| Bellaire Light & Power | Bellaire | OH |
| Bellaire Nail Works | Bellaire | OH |
| Bellaire Steel | Bellaire | OH |
| Bella Isle | Cleveland | OH |
| Bell Stone School | Canton | OH |
| Belmont Brewing | Martins Ferry | OH |
| Benada Aluminum | Girard | OH |
| Bendix | Dayton | OH |
| Bendix | Elyria | OH |
| Benjamin Hey | Cincinnati | OH |
