| HPHouser Products, LLC | Marion | OH | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| HAHowden American Fan CO. | Fairfield | OH | Machinery Manufacturing333412 | — | ◇ UNVERIFIED |
| HUHowden USA | Medina | OH | Machinery Manufacturing333412 | — | ◇ UNVERIFIED |
| HIHpc Integrated Graphics Solutions LLC | Akron | OH | Printing and Related Support Activities323119 | — | ◇ UNVERIFIED |
| HEHubbard Electric Generating Station (0278030771) | Hubbard | OH | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| HAHuntsberger's Antiques | Orrville | OH | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| HTHydraulic Technologies LLC | Galion | OH | Machinery Manufacturing333995 | — | ◇ UNVERIFIED |
| HIHyload, INC. | Wadsworth | OH | Plastics and Rubber Products Manufacturing326299 | — | ◇ UNVERIFIED |
| HCHyponex Corporation-hyponex CORP | Shreve | OH | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| HCHytek Coatings, INC. (1409010844) | Middletown | OH | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| ISIac Sidney LLC | Sidney | OH | Transportation Equipment Manufacturing336360 | — | ◇ UNVERIFIED |
| IGIbm Global Services (0125042152) | Columbus | OH | Machinery Manufacturing333998 | — | ◇ UNVERIFIED |
| IAImperial Adhesives INC | Cincinnati | OH | Chemical Manufacturing325520 | — | ◇ UNVERIFIED |
 Imperial Machine & Tool CO LLC | Wadsworth | OH | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| IAIndalex Aluminum Solutions-girard Plant (0278020021) | Girard | OH | Primary Metal Manufacturing331316 | — | ◇ UNVERIFIED |
| ITIndian Trail Woodworking (0238002002) | Dundee | OH | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| IIInduction Iron | Austintown | OH | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| ICIndustrial Coating Solutions (0125044168) | Columbus | OH | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| IDIndustrie De Nora S.p.a. - Chardon Manufacturing Facility | Chardon | OH | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| IPInhance Products | Columbus | OH | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| IPInland Products INC. | Columbus | OH | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| ILInnovative Labeling Solutions, INC. | Hamilton | OH | Printing and Related Support Activities323122 | 100-499 | ◇ UNVERIFIED |
| IRInnovative Rubber Technologies INC | Wapakoneta | OH | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| ILInsulfoam LLC (0125182441) | Obetz | OH | Plastics and Rubber Products Manufacturing326140 | — | ◇ UNVERIFIED |
| ISIntegrity Sport Services | Wadsworth | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| IIIntermet Ironton Foundry | Ironton | OH | Primary Metal Manufacturing331511 | — | ◇ UNVERIFIED |
| IEIntermountain Electronics INC | South Point | OH | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| IAInternational Automotive Components | Wauseon | OH | Transportation Equipment Manufacturing336322 | — | ◇ UNVERIFIED |
| IPInternational Paint LLC (1318067810) | Berea | OH | Chemical Manufacturing325510 | — | ◇ UNVERIFIED |
| IPInternational Paper | Solon | OH | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| IPInternational Paper | Delaware | OH | Paper Manufacturing322130 | — | ◇ UNVERIFIED |
| IPInternational Paper | Madison | OH | Paper Manufacturing322130 | — | ◇ UNVERIFIED |
| ITInternational Technologies | Hamersville | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| IBInterstate Brands Cincinnati | Cincinnati | OH | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| ICInvacare CORP Elyria Operations | Elyria | OH | Miscellaneous Manufacturing339113 | — | ◇ UNVERIFIED |
| IGIshikawa Gasket America INC | Bowling Green | OH | Miscellaneous Manufacturing339991 | — | ◇ UNVERIFIED |
| IIIten Industries INC. (plant 3) (0204010442) | Ashtabula | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| ITItw Tomco (0386010099) | Bryan | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| JIJabo INC | Marietta | OH | Nonmetallic Mineral Product Manufacturing327215 | — | ◇ UNVERIFIED |
| JMJacobson Mfg LLC | Medina | OH | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| JEJohn Epler Company | Lowell | OH | Machinery Manufacturing333994 | — | ◇ UNVERIFIED |
| JMJohns Manville | Norwalk | OH | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
 Johns Manville International, INC. - Plant 3 (0320010004) | Defiance | OH | Nonmetallic Mineral Product Manufacturing327993 | — | ◇ UNVERIFIED |
| JRJohnson Rubber Company | Middlefield | OH | Plastics and Rubber Products Manufacturing326192 | — | ◇ UNVERIFIED |
| JCJulius C Howe Asphalt and Sealing | Cleves | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| KLKbco LLC - Westerville | Westerville | OH | Chemical Manufacturing325314 | — | ◇ UNVERIFIED |
| KPKeco Plating CO | Cleveland | OH | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| KTKen Tool Manufacturing CO. | Akron | OH | Fabricated Metal Product Manufacturing332212 | — | ◇ UNVERIFIED |
| KCKilbarger Construction, INC. | Logan | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| KSKilroy Structural Steel CO | Cleveland | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
