| MCMidwest Composites, LLC | Wapakoneta | OH | Chemical Manufacturing325211 | — | ◇ UNVERIFIED |
| MDMidwest Dicken Fndy | Arcadia | OH | Primary Metal Manufacturing331525 | — | ◇ UNVERIFIED |
| MWMid West Poly Pak INC (0285000285) | Doylestown | OH | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| MTMidwest Technical Coating (0855140392) | Troy | OH | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| MFMillcreek Finishing Dba Ohio Valley Finishing | Fresno | OH | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| MCMills CO | Upper Sandusky | OH | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MUMinova USA INC | South Point | OH | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MIMinteq International INC Zedmark Div | Dover | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MIMinteq Intl INC | Bryan | OH | Nonmetallic Mineral Product Manufacturing327120 | — | ◇ UNVERIFIED |
| MWModern Welding | Newark | OH | Fabricated Metal Product Manufacturing332420 | — | ◇ UNVERIFIED |
| MWModern Welding Company (0145020338) | Newark | OH | Fabricated Metal Product Manufacturing332313 | — | ◇ UNVERIFIED |
 Modine Manufacturing Company | Pemberville | OH | Transportation Equipment Manufacturing336390 | — | ◇ UNVERIFIED |
| MFMohawk Fine Papers INC - Beckett Mill | Hamilton | OH | Paper Manufacturing322120 | — | ◇ UNVERIFIED |
| MFMolded Fiber Glass Companies, Plant 1 | Ashtabula | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
 Momentive Technologies | Richmond Heights | OH | Nonmetallic Mineral Product Manufacturing327212 | — | ◇ UNVERIFIED |
| MMMonaco Mwe of Ohio LLC | Galion | OH | Fabricated Metal Product Manufacturing332995 | — | ◇ UNVERIFIED |
| MPMonarch Plastic INC (0285010268) | Orrville | OH | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MBMondi Bags Usa, LLC (0679020011) | New Philadelphia | OH | Plastics and Rubber Products Manufacturing326111 | — | ◇ UNVERIFIED |
| MMMoore Metal Finishing * | Sylvania | OH | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MEMorgan Electro Ceramics (1318031627) | Bedford | OH | Nonmetallic Mineral Product Manufacturing327110 | — | ◇ UNVERIFIED |
| MIMoritz International INC. (0370010048) | Mansfield | OH | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MIMoritz International INC. - Illinois Avenue Plant (0370012053) | Mansfield | OH | Transportation Equipment Manufacturing336212 | — | ◇ UNVERIFIED |
| MMMorris Material Handling - Kone Cranes | Franklin | OH | Machinery Manufacturing333923 | — | ◇ UNVERIFIED |
| MLMotors Liquidation CO. | Mansfield | OH | Transportation Equipment Manufacturing336370 | — | ◇ UNVERIFIED |
| MFMpc - Fairborn | Fairborn | OH | Chemical Manufacturing325180 | — | ◇ UNVERIFIED |
| MPM.p.c. Plating, INC. (1318000838) | Cleveland | OH | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MRM&r Ready Mix, INC. | Stony Ridge | OH | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| MPMt Pleasant Blacktopping Company (1409030042) | Fairfield | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| MCMullet Cabinet, INC. (0238000104) | Millersburg | OH | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| MIMultibase INC | Copley | OH | Chemical Manufacturing325991 | — | ◇ UNVERIFIED |
| MCMulti-color Corporation (mcc-mason) | Mason | OH | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NGNapco Group LLC | Greenville | OH | Transportation Equipment Manufacturing336992 | — | ◇ UNVERIFIED |
| NFNational Feedscrew & Machinery | Massillon | OH | Machinery Manufacturing333248 | — | ◇ UNVERIFIED |
| NLNational Lime and Stone CO | Delaware | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| NMNational Metal Abrasive Company | Wadsworth | OH | Primary Metal Manufacturing331513 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco (0812100350) | Springfield | OH | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| NDNestle Development Center | Marysville | OH | Food Manufacturing311920 | — | ◇ UNVERIFIED |
| NSNettleton Steel Treating CO. (1318001253) | Cleveland | OH | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| NANew Age Construction Supply INC | Springfield, Township of | OH | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| NBNew Boston Coke CORP | New Boston | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| NENew Era Ohio LLC | Bryan | OH | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| NMNew Mather Metals, INC. | Toledo | OH | Transportation Equipment Manufacturing336330 | — | ◇ UNVERIFIED |
| NMNew Millenium Building Systems | Continental | OH | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| NNNew Ngc INC | Lorain | OH | Nonmetallic Mineral Product Manufacturing327420 | — | ◇ UNVERIFIED |
| NWNewsome & Work Metallizing CO. INC. | Akron | OH | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| NYNew York Frozen Foods (1318047969) | Bedford Heights | OH | Food Manufacturing311412 | — | ◇ UNVERIFIED |
| NMNisbet-brower Marble LLC | Loveland | OH | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| NMNisbet-brower Marble, LLC | Cincinnati | OH | Plastics and Rubber Products Manufacturing326191 | — | ◇ UNVERIFIED |
| NCNisley Cabinet Plant 2 (0238000197) | Millersburg | OH | Furniture and Related Product Manufacturing337122 | — | ◇ UNVERIFIED |
| NANitto Avecia Uc Campus Labs | Cincinnati | OH | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
