| MLMama La's Kitchen, LLC | Houston | TX | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MLMama Lycha Foods, LLC | Houston | TX | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MPMangan Process Analyzers & CEMS | Houston | TX | Computer and Electronic Product Manufacturing334513 | 20-99 | ◐ LIKELY ACTIVE |
| MMMasson Medical Manufacturing LLC | Houston | TX | Miscellaneous Manufacturing339112 | — | ◐ LIKELY ACTIVE |
| MDMaterial & Design Solutions (Cunningham) | Houston | TX | Miscellaneous Manufacturing339991 | 20-99 | ◐ LIKELY ACTIVE |
| MPMauser Packaging Solutions | Houston | TX | Plastics and Rubber Products Manufacturing326112 | 20-99 | ◐ LIKELY ACTIVE |
| MUMauser USA | Houston | TX | Fabricated Metal Product Manufacturing332439 | 100-499 | ◐ LIKELY ACTIVE |
| MEMaya Erectos, LLC | Houston | TX | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| MUMayekawa USA 4 | Houston | TX | Machinery Manufacturing333912 | 1-19 | ◐ LIKELY ACTIVE |
| MHMBCI Houston Hardy | Houston | TX | Fabricated Metal Product Manufacturing332311 | 100-499 | ◐ LIKELY ACTIVE |
| MTMcclain Trailers INC | Houston | TX | Transportation Equipment Manufacturing336212 | 20-99 | ◐ LIKELY ACTIVE |
| MMcHard | Houston | TX | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| MGMcLane Global | Houston | TX | — | — | ◐ LIKELY ACTIVE |
| MPMcWane Plant & Industrial - Houston | Houston | TX | Fabricated Metal Product Manufacturing332996 | 20-99 | ◐ LIKELY ACTIVE |
| MIMdj Industrial LLC | Houston | TX | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| MPMeat Planet Inc. | Houston | TX | Food Manufacturing311612 | — | ◐ LIKELY ACTIVE |
| MGMedallion Global Wine Group | Houston | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MPMerit Pearland TX | Houston | TX | Miscellaneous Manufacturing339112 | 100-499 | ◐ LIKELY ACTIVE |
| MIMeso Investments | Houston | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| MRMichael Ray Mayberry Jr LLC | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◐ LIKELY ACTIVE |
| MTMicrochip Technology Inc. Houston | Houston | TX | Computer and Electronic Product Manufacturing334413 | 20-99 | ◐ LIKELY ACTIVE |
| MSMill Steel Houston | Houston | TX | Plastics and Rubber Products Manufacturing326299 | 20-99 | ◐ LIKELY ACTIVE |
| MCMiner - CDC Houston | Houston | TX | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| MHMiner - Houston | Houston | TX | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| MHMiner - Houston CDC | Houston | TX | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| MMMini Melts USA - Houston Depot | Houston | TX | Food Manufacturing311520 | 1-19 | ◐ LIKELY ACTIVE |
| MHMIRATECH _ Houston | Houston | TX | Machinery Manufacturing333413 | 100-499 | ◐ LIKELY ACTIVE |
| MFMission Foods - Houston Plant | Houston | TX | Food Manufacturing311830 | 100-499 | ◐ LIKELY ACTIVE |
| MIMiTek Inc. | Houston | TX | Machinery Manufacturing333519 | 20-99 | ◐ LIKELY ACTIVE |
| MLMitsubishi Logisnextamericas (houston) | Houston | TX | Machinery Manufacturing333924 | 500+ | ◐ LIKELY ACTIVE |
| MHMittera Houston LLC | Houston | TX | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| MHM&m Hou | Houston | TX | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| MWModern Welding Company of Texas, Inc. | Houston | TX | Fabricated Metal Product Manufacturing332313 | 20-99 | ◐ LIKELY ACTIVE |
| MIMOGAS Industries Inc. | Houston | TX | Fabricated Metal Product Manufacturing332911 | 100-499 | ◐ LIKELY ACTIVE |
| MLMopani-wplc, LLC | Houston | TX | Computer and Electronic Product Manufacturing334514 | — | ◐ LIKELY ACTIVE |
| MSMorgan Site Services, Inc. (3) | Houston | TX | Machinery Manufacturing333923 | 1-19 | ◐ LIKELY ACTIVE |
| MCMountain Commercial Graphics | Houston | TX | Printing and Related Support Activities323113 | 20-99 | ◐ LIKELY ACTIVE |
| MNMSOL NA Sales | Houston | TX | Computer and Electronic Product Manufacturing334513 | 100-499 | ◐ LIKELY ACTIVE |
| MSMurphy Sales, INC | Houston | TX | Fabricated Metal Product Manufacturing332618 | — | ◐ LIKELY ACTIVE |
| MBMythical Buzz | Houston | TX | Beverage and Tobacco Product Manufacturing312130 | — | ◐ LIKELY ACTIVE |
| NINailor Industries of Texas - Mesa | Houston | TX | Fabricated Metal Product Manufacturing332322 | 100-499 | ◐ LIKELY ACTIVE |
| NINailor Industries of Texas - Rankin | Houston | TX | Fabricated Metal Product Manufacturing332322 | 20-99 | ◐ LIKELY ACTIVE |
| NYNan Ya Plastics Houston | Houston | TX | Plastics and Rubber Products Manufacturing326199 | 20-99 | ◐ LIKELY ACTIVE |
| NDNational Dentex LLC | Houston | TX | Miscellaneous Manufacturing339116 | — | ◐ LIKELY ACTIVE |
| NONATIONAL OILWELL VARCO - Spares Warehouse | Houston | TX | Machinery Manufacturing333132 | 100-499 | ◐ LIKELY ACTIVE |
| NONATIONAL OILWELL VARCO - Technical College | Houston | TX | Machinery Manufacturing333132 | 1-19 | ◐ LIKELY ACTIVE |
| NPNCS Pearson - Houston | Houston | TX | Printing and Related Support Activities323111 | 20-99 | ◐ LIKELY ACTIVE |
| NPNefab Packaging Houston TX | Houston | TX | Wood Product Manufacturing321920 | 1-19 | ◐ LIKELY ACTIVE |
| NENew England Lead Burning Company, Inc. - Houston | Houston | TX | Fabricated Metal Product Manufacturing332321 | 20-99 | ◐ LIKELY ACTIVE |
| NWNext Wave Energy Partners - Pasadena Performance Products (Pasadena TX location) | Houston | TX | Chemical Manufacturing325110 | 1-19 | ◐ LIKELY ACTIVE |