| MTMetrolink Transit | Rock Island | IL | — | ◇ UNVERIFIED |
| MAMetropolis Airport | Metropolis | IL | — | ◇ UNVERIFIED |
| MPMetropolitan Pier & Exposition Authority | Chicago | IL | — | ◇ UNVERIFIED |
| MSMetropolitan Steel I/steelco | Sinking Spring | PA | — | ◇ UNVERIFIED |
| MMMetso Minerals | Milwaukee | WI | — | ◇ UNVERIFIED |
| MCMetzgar Conveyor CO | Comstock Park | MI | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Crystal Lake | IL | — | ◇ UNVERIFIED |
| MUMeyer Utility Structures | Clinton | IL | — | ◇ UNVERIFIED |
| MGMfg Galileo Composites | Sparks | NV | — | ◇ UNVERIFIED |
| MAMfs Arz | Phoenix | AZ | — | ◇ UNVERIFIED |
| MGM & G Duravent INC | Vacaville | CA | — | ◇ UNVERIFIED |
| MTMgk Technologies INC | Homer City | PA | — | ◇ UNVERIFIED |
| MMgs | Germantown | WI | — | ◇ UNVERIFIED |
| MPMiami Products & Chemical CO. | Dayton | OH | — | ◇ UNVERIFIED |
| MSMica Shop, INC. | Goshen | IN | — | ◇ UNVERIFIED |
| MGMic Group | Brenham | TX | — | ◇ UNVERIFIED |
| MAMichael Anthony Jewelers Incorporated | Mount Vernon | NY | — | ◇ UNVERIFIED |
| MCMichael's CO | Sacramento | CA | — | ◇ UNVERIFIED |
| MCMichigan Critial Care Consultants, INC. | Dexter | MI | — | ◇ UNVERIFIED |
| MMMichigan Metal Coatings Plant 2 | Port Huron | MI | — | ◇ UNVERIFIED |
| MWMichigan Wire Die | Warren | MI | — | ◇ UNVERIFIED |
| MUMicrodyn-nadir US INC | Goleta | CA | — | ◇ UNVERIFIED |
| MIMicromeritics Instrument Corporation | Norcross | GA | — | ◇ UNVERIFIED |
| MPMicro Plastics, INC. | Melbourne | AR | — | ◇ UNVERIFIED |
| MAMicrotron Abrasives, INC. | Pineville | NC | — | ◇ UNVERIFIED |
| MTMicrovention Terumo | Tustin | CA | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Champaign | IL | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Mahomet | IL | — | ◇ UNVERIFIED |
| MSMid-america Steel Drum CO INC | Saint Francis | WI | — | ◇ UNVERIFIED |
| MAMid America Steel Inc-fargo | Fargo | ND | — | ◇ UNVERIFIED |
| MCMid Continent Cabinetry | Newton | KS | — | ◇ UNVERIFIED |
| MAMiddle Atlantic Products, INC. | Fairfield | NJ | — | ◇ UNVERIFIED |
| MRMiddleboro Recycling | Middleborough | MA | — | ◇ UNVERIFIED |
| MMMiddletown Metal Works, INC. | Berea | KY | — | ◇ UNVERIFIED |
| MCMid-lakes Corporation | Knoxville | TN | — | ◇ UNVERIFIED |
| MMMidland Metals Products | Chicago | IL | — | ◇ UNVERIFIED |
| MIMid-park INC - Mid-park Highway | Leitchfield | KY | — | ◇ UNVERIFIED |
| MBMid-south Bolt & Screw CO INC | Nashville | TN | — | ◇ UNVERIFIED |
| MSMid South Custom Cabinets | Smyrna | TN | — | ◇ UNVERIFIED |
| MFMid-south Fabrications INC | Jemison | AL | — | ◇ UNVERIFIED |
| MPMidsouth Paving, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| MPMidsouth Paving, INC. - Montgomery Shop | Montgomery | AL | — | ◇ UNVERIFIED |
| MMMidstate Manufacturing | Galesburg | IL | — | ◇ UNVERIFIED |
| MSMid States Steel Products CO | Lexington | KY | — | ◇ UNVERIFIED |
| MSMidstate Steel, INC. | Macon | GA | — | ◇ UNVERIFIED |
| MAMidway Airport Amc Buildings | Chicago | IL | — | ◇ UNVERIFIED |
| MCMidwest Cement Products | Woosung | IL | — | ◇ UNVERIFIED |
| MCMidwest Container Reconditioning Mcr | Fulton | MO | — | ◇ UNVERIFIED |
| MCMidwest Control Products | Summerville | SC | — | ◇ UNVERIFIED |
| MCMidwest Control Products | Bushnell | IL | — | ◇ UNVERIFIED |
| MCMidwest Custom Cabinetry & Woodworking | Abramsabrams | WI | — | ◇ UNVERIFIED |
| MEMidwest Electronic | Ellsworth | IL | — | ◇ UNVERIFIED |
| MSMidwestern Steel Fabricators Chicago LLC | Hammond | IN | — | ◇ UNVERIFIED |
| MHMidwest Hanger CO | Kansas City | MO | — | ◇ UNVERIFIED |
| MHMidwest Hanger Company | Cameron | MO | — | ◇ UNVERIFIED |
| MIMidwest Industrial Metals | Northlake | IL | — | ◇ UNVERIFIED |
| MMMidwest Machine Products INC | Golden | CO | — | ◇ UNVERIFIED |
| MMMid-west Metal Products | Muncie | IN | — | ◇ UNVERIFIED |
| MMMidwest Molding, INC. | Wolcottville | IN | — | ◇ UNVERIFIED |
| MPMidwest Pipe Coating | Schererville | IN | — | ◇ UNVERIFIED |
| MPMidwest Plastic CO | Cherryvale | KS | — | ◇ UNVERIFIED |
| MRMidwest Rem Enterprises INC | Chicago | IL | — | ◇ UNVERIFIED |
| MSMidwest Sanitary Service INC | Wood River | IL | — | ◇ UNVERIFIED |
| MSMidwest Soil Remediation | Lockport | IL | — | ◇ UNVERIFIED |
| MTMidwest Tank Services INC | Bolivar | OH | — | ◇ UNVERIFIED |
| MTMidwest Technical Coating (0855140392) | Troy | OH | — | ◇ UNVERIFIED |
| MWMid West Wire Products INC | Ferndale | MI | — | ◇ UNVERIFIED |
| MFMike Fuhrman, Village President | Waynesville | IL | — | ◇ UNVERIFIED |
| MFMikes Fabricating Incorporated | Moody | AL | — | ◇ UNVERIFIED |
| MWMike's Woodworking INC | Bardstown | KY | — | ◇ UNVERIFIED |
| MGMikron G Building | Kent | WA | — | ◇ UNVERIFIED |
| MMMikron Midwest | Winnebago | IL | — | ◇ UNVERIFIED |
| MRMilam Recycling & Disposal | East Saint Louis | IL | — | ◇ UNVERIFIED |
| MHMile High Equipment CO | Denver | CO | — | ◇ UNVERIFIED |
 Milford Enterprises Mfg | Quakertown | PA | — | ◇ UNVERIFIED |
| MWMilgard Woodclad Division | Tacoma | WA | — | ◇ UNVERIFIED |
| MWMillard Wire & Specialty Strip CO. | Warwick | RI | — | ◇ UNVERIFIED |
| MIMillar Instruments | Houston | TX | — | ◇ UNVERIFIED |
| MDMiller Dial Corporation | El Monte | CA | — | ◇ UNVERIFIED |
| MIMiller/greeneville INC. | Greeneville | TN | — | ◇ UNVERIFIED |
| MIMiller Industrial | Kokomo | IN | — | ◇ UNVERIFIED |
| MFMillers Fab & Weld Corporation | Riverside | CA | — | ◇ UNVERIFIED |
| MUMiller Urethane Prods INC | Moody | AL | — | ◇ UNVERIFIED |
 Miller Welding & Machine CO | Brookville | PA | — | ◇ UNVERIFIED |
| MFMillinocket Fabrication & Machine INC | Millinocket | ME | — | ◇ UNVERIFIED |
| MCMills CO | Upper Sandusky | OH | — | ◇ UNVERIFIED |
| MCMills CO | Marion | OH | — | ◇ UNVERIFIED |
 Mills Manufacturing INC | Earlville | IA | — | ◇ UNVERIFIED |
| MMMilsco Mfg CO | Milwaukee | WI | — | ◇ UNVERIFIED |
| MEMilton Enterprises INC | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| MIMinco Incorporated | Colorado Springs | CO | — | ◇ UNVERIFIED |
| MMMinee Monesse Golf Course | Momence | IL | — | ◇ UNVERIFIED |
| MRMineral Right, INC. Environmental Manager | Phillipsburg | KS | — | ◇ UNVERIFIED |
| MWMineral Wells Facility | Mineral Wells | TX | — | ◇ UNVERIFIED |
 Mini Systems Incorporated | Plainville | MA | — | ◇ UNVERIFIED |
| MEMinneapolis Enameling INC | Jordan | MN | — | ◇ UNVERIFIED |
| MUMinova USA INC | South Point | OH | — | ◇ UNVERIFIED |
| MUMinova USA INC | Grundy | VA | — | ◇ UNVERIFIED |
| MVMinton Ventures, LLC | Lenoir | NC | — | ◇ UNVERIFIED |
| MPMirandy Products LLC | South Hempstead | NY | — | ◇ UNVERIFIED |
