| MMMonde Marron, LLC | Houston | TX | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| MMMonde Marron, LLC | Houston | TX | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| MBMonoflo Breen Road Facility | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| MBMoore Business Forms | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
 Moore Fabrication, INC. | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| MSMora Signs LLC | Houston | TX | Miscellaneous Manufacturing339950 | — | ◇ UNVERIFIED |
| MWMorton Wood Treating Site | Houston | MO | Wood Product Manufacturing321918 | — | ◇ UNVERIFIED |
| MFM&p Flange & Pipe Protection | Houston | TX | Fabricated Metal Product Manufacturing332111 | — | ◇ UNVERIFIED |
| MPM Power Machining, LLC | Houston | TX | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| MWMr. Washerman | Houston | TX | Fabricated Metal Product Manufacturing332312 | — | ◇ UNVERIFIED |
| MBMsd Building Corporation | Houston | TX | Fabricated Metal Product Manufacturing332321 | — | ◇ UNVERIFIED |
| MGMt Geo-tech Tools, LLC | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| MIMw Industries, INC. | Houston | TX | Fabricated Metal Product Manufacturing332613 | — | ◇ UNVERIFIED |
| MIMw Industries, INC. | Houston | TX | Fabricated Metal Product Manufacturing332722 | — | ◇ UNVERIFIED |
| MTMy Tailor Me LLC | Houston | TX | Apparel Manufacturing315220 | — | ◇ UNVERIFIED |
| NGNasco Group LLC | Houston | TX | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| NGNasco Group LLC | Houston | TX | Petroleum and Coal Products Manufacturing324191 | — | ◇ UNVERIFIED |
| NDNational Dairy Brands, LLC | Houston | TX | Food Manufacturing311512 | — | ◇ UNVERIFIED |
| NONational Oilwell Varco | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NSNational Shutters, LLC | Houston | TX | Wood Product Manufacturing321999 | — | ◇ UNVERIFIED |
| NSNational Steel Products CO | Houston | TX | Fabricated Metal Product Manufacturing332311 | — | ◇ UNVERIFIED |
| NNeurogene | Houston | TX | Chemical Manufacturing325414 | — | ◇ UNVERIFIED |
| NSNext Step Electronics, INC. | Houston | TX | Electrical Equipment, Appliance & Component Manufacturing335999 | — | ◇ UNVERIFIED |
| NIN-fab, INC. | Houston | TX | Fabricated Metal Product Manufacturing332999 | — | ◇ UNVERIFIED |
| NRNguyen Rainbow INC | Houston | TX | Machinery Manufacturing333241 | — | ◇ UNVERIFIED |
| NONight Owls Print Shop LLC | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NZNikki Z INC | Houston | TX | Food Manufacturing311812 | — | ◇ UNVERIFIED |
| NHNIS Holdings Inc. | Houston | TX | Chemical Manufacturing325412 | — | ◇ UNVERIFIED |
| NINitretex Ii | Houston | TX | Fabricated Metal Product Manufacturing332812 | — | ◇ UNVERIFIED |
| NNitroset | Houston | TX | Machinery Manufacturing333513 | — | ◇ UNVERIFIED |
| NANorth American Precast Company | Houston | TX | Nonmetallic Mineral Product Manufacturing327390 | — | ◇ UNVERIFIED |
| NPNorthwest Pipe-houston | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| NRNov Rig Solutions Brittmoore Repair Center | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NRNov Rig Systems Sam Houston Parkway | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NWNov Wise Breen Drive | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| NMNpn Machine Tools | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| NINSJ International, LLC | Houston | TX | Plastics and Rubber Products Manufacturing326199 | — | ◇ UNVERIFIED |
| NANsquare Associates LLC | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| NANupi Americas, INC. | Houston | TX | Plastics and Rubber Products Manufacturing326122 | — | ◇ UNVERIFIED |
| OWO'brien Wire Products of Texas, INC. | Houston | TX | Primary Metal Manufacturing331222 | — | ◇ UNVERIFIED |
| OIOdyssey Industrial Systems, LLC | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| OAOldcastle Architectural West INC | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
| OTOmk Tube Miller Rd 2 | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| OPOmni Precision | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| OPOmni Precision, INC. | Houston | TX | Fabricated Metal Product Manufacturing332710 | — | ◇ UNVERIFIED |
| OOOmron Oilfield & Marine Services | Houston | TX | Machinery Manufacturing333132 | — | ◇ UNVERIFIED |
| OSOne Source Printing and Graphics, INC. | Houston | TX | Printing and Related Support Activities323111 | — | ◇ UNVERIFIED |
| OBOrbital Brewing Company, LLC | Houston | TX | Beverage and Tobacco Product Manufacturing312120 | — | ◇ UNVERIFIED |
| OCOsborne Cabinets and Millwork | Houston | TX | Furniture and Related Product Manufacturing337110 | — | ◇ UNVERIFIED |
| OROscar Renda Contracting, INC. | Houston | TX | Nonmetallic Mineral Product Manufacturing327320 | — | ◇ UNVERIFIED |
