| HTHope Timber Pallet & Recycling | Newark, OH | Wood Product Manufacturing321920 | 100–499 | ◐ LIKELY ACTIVE |
Hormel Foods Corporation | Groveport, OH | — | — | ◐ LIKELY ACTIVE |
| HMHudson Meat Company | Columbus, OH | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| IIIc3d, INC. | Columbus, OH | Chemical Manufacturing325211 | — | ◐ LIKELY ACTIVE |
| IFInfinite Familia Elixirs LLC | Columbus, OH | Chemical Manufacturing325411 | — | ◐ LIKELY ACTIVE |
| ISInquisitive Spirits LTD. | Delaware, OH | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| ICInterstate Cold Storage, Inc. | Columbus, OH | — | — | ◐ LIKELY ACTIVE |
| JOJackie O's Pub and Brewery | Columbus, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| JTJames T. Young | Newark, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| JCJmwillis' Cakes & Baked Goodies LLC | Columbus, OH | Food Manufacturing311811 | — | ◐ LIKELY ACTIVE |
| JEJon Edwards Steel | Columbus, OH | Fabricated Metal Product Manufacturing332323 | 20–99 | ◐ LIKELY ACTIVE |
| JPJS Products Ohio | Groveport, OH | Fabricated Metal Product Manufacturing332510 | 20–99 | ◐ LIKELY ACTIVE |
| KPKamps Pallets - Columbus Janitrol | Columbus, OH | Wood Product Manufacturing321920 | 20–99 | ◐ LIKELY ACTIVE |
| KPKamps Pallets -Columbus Refugee | Columbus, OH | Wood Product Manufacturing321920 | 20–99 | ◐ LIKELY ACTIVE |
| KSKatie's Snack Foods | Hilliard, OH | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| KCkdc/one Columbus | New Albany, OH | Chemical Manufacturing325611 | 500+ | ◐ LIKELY ACTIVE |
| KGKenyon's Glass | Grove City, OH | Nonmetallic Mineral Product Manufacturing327215 | 20–99 | ◐ LIKELY ACTIVE |
Kinetics Noise Control Inc | 6300 Irelan Place, Dublin, OH, USA, OH | Fabricated Metal Product Manufacturing332311 | 100–499 | ◐ LIKELY ACTIVE |
| KKkc | Columbus, OH | Food Manufacturing311111 | 100–499 | ◐ LIKELY ACTIVE |
| KTKnapheide Truck Equipment Company Columbus | Columbus, OH | Transportation Equipment Manufacturing336211 | 20–99 | ◐ LIKELY ACTIVE |
| KKomar-Groveport | Groveport, OH | Fabricated Metal Product Manufacturing332313 | 100–499 | ◐ LIKELY ACTIVE |
| KMKonkus Marble and Granite | Columbus, OH | Nonmetallic Mineral Product Manufacturing327991 | 100–499 | ◐ LIKELY ACTIVE |
| KUKpr U.s., L.l.c. | Dublin, OH | Textile Mills313110 | — | ◐ LIKELY ACTIVE |
| LLancaster | Lancaster, OH | Machinery Manufacturing333413 | 100–499 | ◐ LIKELY ACTIVE |
| LCLear Corporation - Hebron | Hebron, OH | Plastics and Rubber Products Manufacturing326150 | 100–499 | ◐ LIKELY ACTIVE |
| LOLeather & Oak Spirits LLC | Hilliard, OH | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| LVLegend Valley Beverage, LLC | St. Louisville, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| LLiberty-550 | Delaware, OH | Primary Metal Manufacturing331511 | 20–99 | ◐ LIKELY ACTIVE |
| LTLiberty Tec | Delaware, OH | Primary Metal Manufacturing331511 | 20–99 | ◐ LIKELY ACTIVE |
| LDLimoncello D'amore, LLC | Lewis Center, OH | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| LELincoln Electric Automation Columbus | Columbus, OH | Machinery Manufacturing333992 | 20–99 | ◐ LIKELY ACTIVE |
| LILogitech, Inc. | Grove City, OH | Machinery Manufacturing333922 | 20–99 | ◐ LIKELY ACTIVE |
| LLondon | London, OH | Plastics and Rubber Products Manufacturing326122 | 20–99 | ◐ LIKELY ACTIVE |
| LLumbercraft | Canal Winchester, OH | Wood Product Manufacturing321214 | 20–99 | ◐ LIKELY ACTIVE |
| LULumiforte USA INC. | Sunbury, OH | Chemical Manufacturing325510 | — | ◐ LIKELY ACTIVE |
| LLLuxottica Lockbourne RxO | Lockbourne, OH | Miscellaneous Manufacturing339115 | 100–499 | ◐ LIKELY ACTIVE |
| MSMagna Seating Columbus | Lancaster, OH | Transportation Equipment Manufacturing336360 | 500+ | ◐ LIKELY ACTIVE |
| MHManchester Hill, LLC | Circleville, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MAMarysville Auto Plant | Marysville, OH | Transportation Equipment Manufacturing336111 | 500+ | ◐ LIKELY ACTIVE |
| MMMarzetti Manufacturing Company-Indianola | Columbus, OH | Food Manufacturing311941 | 100–499 | ◐ LIKELY ACTIVE |
| MMMarzetti Manufacturing Company-Quality Bakery | Columbus, OH | Food Manufacturing311941 | 20–99 | ◐ LIKELY ACTIVE |
| MMMcKinley's Meadery | Hebron, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MPMeat Processing Career Center | Orient, OH | Food Manufacturing311611 | — | ◐ LIKELY ACTIVE |
| MPMedical Purchasing Solutions - OH | Hilliard, OH | Miscellaneous Manufacturing339114 | 1–19 | ◐ LIKELY ACTIVE |
| MHMelfitano’s Handcrafted Wines | Hilliard, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MPMenasha Packaging Company | Groveport, OH | — | — | ◐ LIKELY ACTIVE |
| MWMezzaluna Winery | Delaware, OH | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MDMichael D Hamilton & Heather M Hamilton | Orient, OH | Beverage and Tobacco Product Manufacturing312140 | — | ◐ LIKELY ACTIVE |
| MMMidwest Molding Inc. | Plain City, OH | Plastics and Rubber Products Manufacturing326199 | 100–499 | ◐ LIKELY ACTIVE |
| MPMill Park | Lancaster, OH | Fabricated Metal Product Manufacturing332119 | 100–499 | ◐ LIKELY ACTIVE |