| MEMLM Enterprises LLC | Oklahoma City | OK | Fabricated Metal Product Manufacturing332811 | — | ◇ UNVERIFIED |
| MMM & M Manufacturing, INC. | Tulsa | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MMM & M Manufacturing, INC. | Tulsa | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MDModern Dental Solutions, LLC | Broken Arrow | OK | Miscellaneous Manufacturing339116 | — | ◇ UNVERIFIED |
| MPModern Plating CO. INC. | Tulsa | OK | Fabricated Metal Product Manufacturing332813 | — | ◇ UNVERIFIED |
| MHMollycoddled Hash Slinger, LLC | Yukon | OK | Food Manufacturing311340 | — | ◇ UNVERIFIED |
| MBMonkey Business Signs | Lawton | OK | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MPMonument Place LLC | Mcalester | OK | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| MNMoore North America | Stillwater | OK | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| MFMorgan Fabrication | Oklahoma City | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| MYMoua Yang & Cher Lor | Vinita | OK | Food Manufacturing311611 | — | ◇ UNVERIFIED |
| MHMowdy Holdings LLC | Duncan | OK | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MFMower Family Enterprises, LLC | Oklahoma City | OK | Paper Manufacturing322220 | — | ◇ UNVERIFIED |
| MMuskogee | Muskogee | OK | Nonmetallic Mineral Product Manufacturing327213 | — | ◇ UNVERIFIED |
| MTMuskogee Tire Repair Faclty | Muskogee | OK | Plastics and Rubber Products Manufacturing326211 | — | ◇ UNVERIFIED |
| NIN9682N Investments LLC | Tulsa | OK | Beverage and Tobacco Product Manufacturing312130 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco, L.p. | Duncan | OK | Machinery Manufacturing333911 | — | ◇ UNVERIFIED |
| NMNeilson Manufacturing | Tulsa | OK | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| NINenoz Interior Shutters, LLC | Sapulpa | OK | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| NINgc Industries, LLC | Pryor | OK | Paper Manufacturing322121 | — | ◇ UNVERIFIED |
| NBNiagara Bottling, LLC | Oklahoma City | OK | Beverage and Tobacco Product Manufacturing312112 | — | ◇ UNVERIFIED |
| NPNippon Paint Automotive Americas, INC. | Sparks | OK | Chemical Manufacturing325130 | — | ◇ UNVERIFIED |
| NSNorth Star Publishing, INC. | Oklahoma City | OK | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NTNorthwest Transformer CO INC | Oklahoma City | OK | Electrical Equipment, Appliance & Component Manufacturing335311 | — | ◇ UNVERIFIED |
| NLNortronics LLC | Tulsa | OK | Electrical Equipment, Appliance & Component Manufacturing335312 | — | ◇ UNVERIFIED |
| NMNoss Manufacturing, INC. | — | OK | Transportation Equipment Manufacturing336991 | — | ◇ UNVERIFIED |
| NWNov Wilco | Marlow | OK | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NSNts Signs | Lone Grove | OK | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| NGNW Green Panels LLC | Alva | OK | Wood Product Manufacturing321920 | — | ◇ UNVERIFIED |
| NSNw Sign Industries | Oklahoma City | OK | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| OLObp LLC | Oklahoma City | OK | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| OAOffroad Addiction, Inc | Oklahoma City | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| OKOh Keys | Bethany | OK | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| OCOil Capitol Neon | Tulsa | OK | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| OLOilstone LLC / Shady Point Plant | Shady Point | OK | Petroleum and Coal Products Manufacturing324121 | — | ◇ UNVERIFIED |
| OCOkc Crystal Laboratory, INC. | Luther | OK | Miscellaneous Manufacturing339999 | — | ◇ UNVERIFIED |
| OCOkc Crystal Laboratory INC / Okc Crystal Laboratory | Luther | OK | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| OFOkc Fabric Market LLC | Oklahoma City | OK | Textile Mills313310 | — | ◇ UNVERIFIED |
| OSOkc Soda Co, llc | Oklahoma City | OK | Beverage and Tobacco Product Manufacturing312111 | — | ◇ UNVERIFIED |
| OFOk Foods | Oklahoma City | OK | Food Manufacturing311612 | — | ◇ UNVERIFIED |
| OFOk Foods, INC. | Muldrow | OK | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| OFOk Foods, INC. - Heavener Feed Mill | Heavener | OK | Food Manufacturing311119 | — | ◇ UNVERIFIED |
| OFOk Foods, INC. - Heavener Production Plant | Heavener | OK | Food Manufacturing311615 | — | ◇ UNVERIFIED |
| OIOk Iron and Metal / Metal Reclamation Faclty | Ardmore | OK | Primary Metal Manufacturing331314 | — | ◇ UNVERIFIED |
| OAOklahoma Apparel LLC | Newcastle | OK | Printing and Related Support Activities323113 | — | ◇ UNVERIFIED |
| OCOklahoma City Polyethylene Foam Extrusion Plant | Yukon | OK | Plastics and Rubber Products Manufacturing326150 | — | ◇ UNVERIFIED |
| OCOklahoma Countertops & Flooring | Newcastle | OK | Nonmetallic Mineral Product Manufacturing327991 | — | ◇ UNVERIFIED |
| ODOklahoma Distilling Company | Oklahoma City | OK | Beverage and Tobacco Product Manufacturing312140 | — | ◇ UNVERIFIED |
| OIOklahoma Interpak, LLC | Muskogee | OK | Paper Manufacturing322211 | — | ◇ UNVERIFIED |
| OSOklahoma Stair Craft, INC. | Sapulpa | OK | Fabricated Metal Product Manufacturing332323 | — | ◇ UNVERIFIED |
