| MCMid-lakes Corporation | Knoxville | TN | Textile Product Mills314999 | 1-19 | ◇ UNVERIFIED |
| MPMidland Products LLC | Tinley Park | IL | Chemical Manufacturing325612 | 1-19 | ◇ UNVERIFIED |
| MIMidstates Industrial Group INC | Clinton Township | MI | Machinery Manufacturing333517 | 1-19 | ◇ UNVERIFIED |
| MPMid-states Paint & Chem CO | Saint Louis | MO | Chemical Manufacturing325510 | 1-19 | ◇ UNVERIFIED |
| MCMidwest Custom Cabinetry & Woodworking | Abramsabrams | WI | Furniture and Related Product Manufacturing337110 | 1-19 | ◇ UNVERIFIED |
| MEMidwest Electric Transformer | Newton | KS | Electrical Equipment, Appliance & Component Manufacturing335311 | 1-19 | ◇ UNVERIFIED |
| MFMidwest Fabrication, LLC | Grafton | ND | Machinery Manufacturing333111 | 1-19 | ◇ UNVERIFIED |
| MGMidwest Gear & Tool-roseville | Roseville | MI | Machinery Manufacturing333612 | 1-19 | ◇ UNVERIFIED |
| MLMidwest Laminating | Alsip | IL | Paper Manufacturing322130 | 1-19 | ◇ UNVERIFIED |
| MPMidwest Plastic CO | Cherryvale | KS | Plastics and Rubber Products Manufacturing326199 | 1-19 | ◇ UNVERIFIED |
| MPMidwest Plating CO INC | Saint Louis | MO | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| MRMidwest Ready Mix | Vermillion | SD | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| MCMike's Custom Cabinets | Constantia | NY | Furniture and Related Product Manufacturing337110 | 1-19 | ◇ UNVERIFIED |
| MMMillbank Materials USA | Portland | OR | Primary Metal Manufacturing331319 | 1-19 | ◇ UNVERIFIED |
| MPMillenium Plating Company | Lowell | MA | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| MLMiller Lumber CO | Millersburg | OH | Wood Product Manufacturing321113 | 1-19 | ◇ UNVERIFIED |
| MMMiller Metal Fabricating | Rochester | NY | Fabricated Metal Product Manufacturing332313 | 1-19 | ◇ UNVERIFIED |
| MRMilligan Ready Mix | Iuka | MS | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| MSMillwork Solutions INC | Seward | PA | Wood Product Manufacturing321211 | 1-19 | ◇ UNVERIFIED |
| MSMil - Spec Metal Finishing INC | Edgewater | FL | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| MPMinistry Press LLC | Arvada | CO | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| MPMinit Print INC | Poplar Bluff | MO | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| MBMlk Business Forms, INC. | New Haven | CT | Printing and Related Support Activities323111 | 1-19 | ◇ UNVERIFIED |
| MMM & M Fabrication | Chillicothe | OH | Fabricated Metal Product Manufacturing332323 | 1-19 | ◇ UNVERIFIED |
| MMMmmid-cities Mfg | Grand Prairie | TX | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| MMMobile Materials Nashville, LLC | Nashville | TN | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| MFModern Fixture CO | Denver | CO | Furniture and Related Product Manufacturing337127 | 1-19 | ◇ UNVERIFIED |
| MIModern Industries INC. | Providence | RI | Wood Product Manufacturing321918 | 1-19 | ◇ UNVERIFIED |
| MMModern Mechanical Fabrication INC | Champlain | NY | Fabricated Metal Product Manufacturing332999 | 1-19 | ◇ UNVERIFIED |
| MTMoldex Tool Design CORP | Meadville | PA | Machinery Manufacturing333249 | 1-19 | ◇ UNVERIFIED |
| MFMonks Four Corners Sandblasting Servicre, INC. | Farmington | NM | Fabricated Metal Product Manufacturing332813 | 1-19 | ◇ UNVERIFIED |
| MRMon River Supply | West Elizabeth | PA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| MMMoonlight Meadery LLC | Londonderry | NH | Beverage and Tobacco Product Manufacturing312130 | 1-19 | ◇ UNVERIFIED |
| MIMoore-built INC | Benedict | NE | Fabricated Metal Product Manufacturing332312 | 1-19 | ◇ UNVERIFIED |
| MMMoore Metal Plating CORP | Bossier City | LA | Fabricated Metal Product Manufacturing332312 | 1-19 | ◇ UNVERIFIED |
| MRMoorhouse Ready Mix Inc-breda (port Plt) | Breda | IA | Nonmetallic Mineral Product Manufacturing327320 | 1-19 | ◇ UNVERIFIED |
| MSMorton Supplies INC | Morton | IL | Miscellaneous Manufacturing339999 | 1-19 | ◇ UNVERIFIED |
| MHMountain Home Excavation | Mountain Home | AR | Petroleum and Coal Products Manufacturing324121 | 1-19 | ◇ UNVERIFIED |
| MPMountain Printing CO INC | Berlin | NJ | Printing and Related Support Activities323110 | 1-19 | ◇ UNVERIFIED |
| MPM.o.w Printing INC. | Collinsville | IL | Printing and Related Support Activities323110 | 1-19 | ◇ UNVERIFIED |
| MWMozark Wood Products, LLC | Farmington | MO | Wood Product Manufacturing321113 | 1-19 | ◇ UNVERIFIED |
| MMrse | West Brookfield | MA | Machinery Manufacturing333514 | 1-19 | ◇ UNVERIFIED |
| MMMull Machine CO | Wheeling | WV | Fabricated Metal Product Manufacturing332710 | 1-19 | ◇ UNVERIFIED |
| MLMurgel Limousine Mfg | Marshfield | MO | Transportation Equipment Manufacturing336111 | 1-19 | ◇ UNVERIFIED |
| MGMurphy Gate CO | Liberty | KY | Fabricated Metal Product Manufacturing332312 | 1-19 | ◇ UNVERIFIED |
| MPMurphy Products, INC. | Oklahoma City | OK | Machinery Manufacturing333111 | 1-19 | ◇ UNVERIFIED |
| MHMy-d Han-d Mfg CO INC | Dodge City | KS | Machinery Manufacturing333111 | 1-19 | ◇ UNVERIFIED |
| MMMyers Mfg INC | Greencastle | PA | Machinery Manufacturing333249 | 1-19 | ◇ UNVERIFIED |
| MBMyku Biosciences LLC | Denver | CO | Chemical Manufacturing325620 | 1-19 | ◇ UNVERIFIED |
| NINanoprobes INC | Yaphank | NY | Chemical Manufacturing325413 | 1-19 | ◇ UNVERIFIED |
