| MEMac Equipment INC | Sabetha | KS | — | ◇ UNVERIFIED |
| MLMachine Laboratory LLC | Chesterfield | MO | — | ◇ UNVERIFIED |
| MPMachine Precision Components | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| MAMacks Auto Recycling | Urbana | IL | — | ◇ UNVERIFIED |
| MMMagna Mirrors Corporation | Grand Haven | MI | — | ◇ UNVERIFIED |
| MUMagnequench Ug | Valparaiso | IN | — | ◇ UNVERIFIED |
| MSMagnetic Separation Systems, INC. | Nashville | TN | — | ◇ UNVERIFIED |
| MBMahle Behr USA INC | Troy | MI | — | ◇ UNVERIFIED |
 Mahle Industrial Thermal Systems America | Grand Rapids | MI | — | ◇ UNVERIFIED |
| MVMahomet, Village of | Mahomet | IL | — | ◇ UNVERIFIED |
| MPMajestic Products Company | Huntington | IN | — | ◇ UNVERIFIED |
| MJMalone Jason & Mandy | Jewett | IL | — | ◇ UNVERIFIED |
| MEMan Energy Solutions USA INC | Pompano Beach | FL | — | ◇ UNVERIFIED |
| MMMann Made Products | Waterville | KS | — | ◇ UNVERIFIED |
| MVMariah Vision 3 Entertainment Incorporated | Virginia Beach | VA | — | ◇ UNVERIFIED |
| MFMarine Floats CORP | Tacoma | WA | — | ◇ UNVERIFIED |
| MMMarine Material Handling CORP | Lemont | IL | — | ◇ UNVERIFIED |
| MGMarsha Grubb | Shelbyville | IL | — | ◇ UNVERIFIED |
| MCMartin Conveyor Division | Mansfield | TX | — | ◇ UNVERIFIED |
| MMartinizing | Palatine | IL | — | ◇ UNVERIFIED |
| MKMary Kay Abts | Pekin | IL | — | ◇ UNVERIFIED |
| MCMason Candlelight | Middlesex | NJ | — | ◇ UNVERIFIED |
| MMMason Mfg INC | Decatur | IL | — | ◇ UNVERIFIED |
| MEMassac Environmental Tech INC | Centralia | IL | — | ◇ UNVERIFIED |
| MCMassasoit Community College | Canton | MA | — | ◇ UNVERIFIED |
| MHMassdot Highway Division | Boston | MA | — | ◇ UNVERIFIED |
| MEMathis Excavating | Du Quoin | IL | — | ◇ UNVERIFIED |
 Matthews International Corporation | Kingwood | WV | — | ◇ UNVERIFIED |
| MLMatt Leigh | Pontiac | IL | — | ◇ UNVERIFIED |
 Mayville Engineering Company, INC. (mec) - Virginia Main Plant - Wytheville | Wytheville | VA | — | ◇ UNVERIFIED |
| MAMcgill Air Flow LLC | Bennington | VT | — | ◇ UNVERIFIED |
| MDMcgill Development Corporation | Westerville | OH | — | ◇ UNVERIFIED |
| MPMchenry Public Works Garage | Mchenry | IL | — | ◇ UNVERIFIED |
| MMMckinstry Metal Works INC. | Chicopee | MA | — | ◇ UNVERIFIED |
| MEMclellan Equipment INC | Hanford | CA | — | ◇ UNVERIFIED |
| MIMeadowvale INC | Sandwich | IL | — | ◇ UNVERIFIED |
| MFMedora Fs, INC. | Medora | IL | — | ◇ UNVERIFIED |
| MLMedranos Landscape INC | Rockford | IL | — | ◇ UNVERIFIED |
| MTMeioco Terminal | Ashkum | IL | — | ◇ UNVERIFIED |
| MMMelrose Metal Products, INC | Fremont | CA | — | ◇ UNVERIFIED |
| MWMemphis Wire & Iron Works Incorporated | Memphis | TN | — | ◇ UNVERIFIED |
| MAMercury Aircraft Bath Plant | Bath | NY | — | ◇ UNVERIFIED |
| MAMercury Aircraft INC | Hammondsport | NY | — | ◇ UNVERIFIED |
| MHMeritor Heavy Vehicle Systems, LLC | Forest City | NC | — | ◇ UNVERIFIED |
| MIMerkle-korff Industries- Plant 3 | Des Plaines | IL | — | ◇ UNVERIFIED |
| MAMerryman Aggregates | Harvard | IL | — | ◇ UNVERIFIED |
| MAMerryman Aggregates LLC | Woodstock | IL | — | ◇ UNVERIFIED |
| MEMerryman Excavation INC | Woodstock | IL | — | ◇ UNVERIFIED |
| MCMetal Components INC | Wyoming | MI | — | ◇ UNVERIFIED |
| MCMetal Craft Engineering | Fenwick | WV | — | ◇ UNVERIFIED |
| MCMetal Crafters | Ronkonkoma | NY | — | ◇ UNVERIFIED |
| MMetalcrafters | Simi Valley | CA | — | ◇ UNVERIFIED |
| MIMetal Industries-bushnell | Bushnell | FL | — | ◇ UNVERIFIED |
| MMMetal Management Midwest INC | Bedford Park | IL | — | ◇ UNVERIFIED |
| MMMetal Masters of North Florida INC | Jacksonville | FL | — | ◇ UNVERIFIED |
| MIMetaltech Industries INC | Longmont | CO | — | ◇ UNVERIFIED |
| MTMetrolink Transit | Rock Island | IL | — | ◇ UNVERIFIED |
| MAMetropolis Airport | Metropolis | IL | — | ◇ UNVERIFIED |
| MPMetropolitan Pier & Exposition Authority | Chicago | IL | — | ◇ UNVERIFIED |
| MCMetzgar Conveyor CO | Comstock Park | MI | — | ◇ UNVERIFIED |
| MMMeyer Materials CO | Crystal Lake | IL | — | ◇ UNVERIFIED |
| MAMfs Arz | Phoenix | AZ | — | ◇ UNVERIFIED |
| MGM & G Duravent INC | Vacaville | CA | — | ◇ UNVERIFIED |
| MAMicrotron Abrasives, INC. | Pineville | NC | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Mahomet | IL | — | ◇ UNVERIFIED |
| MAMid America Sand & Gravel CO | Champaign | IL | — | ◇ UNVERIFIED |
| MRMiddleboro Recycling | Middleborough | MA | — | ◇ UNVERIFIED |
| MAMidway Airport Amc Buildings | Chicago | IL | — | ◇ UNVERIFIED |
| MCMidwest Cement Products | Woosung | IL | — | ◇ UNVERIFIED |
| MEMidwest Electronic | Ellsworth | IL | — | ◇ UNVERIFIED |
| MIMidwest Industrial Metals | Northlake | IL | — | ◇ UNVERIFIED |
| MRMidwest Rem Enterprises INC | Chicago | IL | — | ◇ UNVERIFIED |
| MSMidwest Sanitary Service INC | Wood River | IL | — | ◇ UNVERIFIED |
| MSMidwest Soil Remediation | Lockport | IL | — | ◇ UNVERIFIED |
| MFMike Fuhrman, Village President | Waynesville | IL | — | ◇ UNVERIFIED |
| MFMikes Fabricating Incorporated | Moody | AL | — | ◇ UNVERIFIED |
| MRMilam Recycling & Disposal | East Saint Louis | IL | — | ◇ UNVERIFIED |
| MBMilo Bulk Plant LLC | Penn Yan | NY | — | ◇ UNVERIFIED |
| MMMinee Monesse Golf Course | Momence | IL | — | ◇ UNVERIFIED |
 Mini Systems Incorporated | Plainville | MA | — | ◇ UNVERIFIED |
| MVMinton Ventures, LLC | Lenoir | NC | — | ◇ UNVERIFIED |
| MMMissouri Meerschaum Company | Washington | MO | — | ◇ UNVERIFIED |
| MCMitchell Container Services INC | Saraland | AL | — | ◇ UNVERIFIED |
| MLMixonsite LLC | Chicago | IL | — | ◇ UNVERIFIED |
| MAMizzonis Auto Body INC. | Lodi | NJ | — | ◇ UNVERIFIED |
| MLM & L Oil CO INC | Cisne | IL | — | ◇ UNVERIFIED |
| MSMm Systems CORP | Pendergrass | GA | — | ◇ UNVERIFIED |
| MMM & M Tank & Tower | Greeley | CO | — | ◇ UNVERIFIED |
| MLMobile Lifts INC | Collegeville | PA | — | ◇ UNVERIFIED |
| MWModern Welding | Newark | OH | — | ◇ UNVERIFIED |
| MJModine Jackson INC | Jackson | MS | — | ◇ UNVERIFIED |
 Modine Manufacturing Company | Pemberville | OH | — | ◇ UNVERIFIED |
| MMModine Mfg CO | Mchenry | IL | — | ◇ UNVERIFIED |
| MMModine Midwest Incorporated | Indianapolis | IN | — | ◇ UNVERIFIED |
| MHMonarch Hardware Manufacturing | Shepherdsville | KY | — | ◇ UNVERIFIED |
| MHMontec Hydraulics/carmichaels | Carmichaels | PA | — | ◇ UNVERIFIED |
| MIMonti Incorporated | Cincinnati | OH | — | ◇ UNVERIFIED |
| MDMoore Dp, LLC | Lexington | KY | — | ◇ UNVERIFIED |
| MPMoore Painting CO | Alton | IL | — | ◇ UNVERIFIED |
| MTMoorestown Twp Water Pollution Control Plant | Moorestown | NJ | — | ◇ UNVERIFIED |
