| MMMaro Manufacturing, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| MMMarquardt & Mueller Machining, INC | Woodstock | IL | — | ◇ UNVERIFIED |
| MGMarquette Gas | Chicago | IL | — | ◇ UNVERIFIED |
| MMMarquon Miracle Mart | Maquon | IL | — | ◇ UNVERIFIED |
| MLMarrick LLC | Norfolk | VA | — | ◇ UNVERIFIED |
| MQMarrs Quik Stop | Chandlerville | IL | — | ◇ UNVERIFIED |
| MAMarshall and Associates, Inc. | Boise | ID | — | ◇ UNVERIFIED |
| MMMarshall Manufacturing Company | Minneapolis | MN | — | ◇ UNVERIFIED |
| MRMarshall Ruby INC | Frostburg | MD | — | ◇ UNVERIFIED |
| MSMarshall Stamping Company | Valencia | PA | — | ◇ UNVERIFIED |
| MMMarshal Machinery INC | San Clemente | CA | — | ◇ UNVERIFIED |
| MIMarstan INC | Coon Rapids | MN | — | ◇ UNVERIFIED |
| MCMarta Cohen Trust Property | Decatur | IL | — | ◇ UNVERIFIED |
| MMMartelli's Metal Fabrication INC | Ivyland | PA | — | ◇ UNVERIFIED |
| MEMart Express | Broadview | IL | — | ◇ UNVERIFIED |
| MSMartha S Materials INC | Lexington | KY | — | ◇ UNVERIFIED |
| MOMarthon One Stop Shoppe | Newton | IL | — | ◇ UNVERIFIED |
| MIMarti, Inc. | Bemidji | MN | — | ◇ UNVERIFIED |
| MCMartin & Co. Capital Management LLC | Hamilton | OH | — | ◇ UNVERIFIED |
| MCMartin Commercial Excavating LLC | Rock Island | IL | — | ◇ UNVERIFIED |
| MSMartinez Steel | San Francisco | CA | — | ◇ UNVERIFIED |
| MGMartin Garage Doors of Nevada LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| MGMartin Garage Doors of Nevada, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| MIMartin Industries LLC | Elkton | KY | — | ◇ UNVERIFIED |
| MIMartin Iron Works, INC | Reno | NV | — | ◇ UNVERIFIED |
| MIMartin Iron Works, INC. | Reno | NV | — | ◇ UNVERIFIED |
| MMMartin Manufactuirng, INC. | Sapulpa | OK | — | ◇ UNVERIFIED |
| MOMartin Oil of Indiana 709 | Chicago | IL | — | ◇ UNVERIFIED |
| MHMartin-Pittman Holdings, Inc. | Indianapolis | IN | — | ◇ UNVERIFIED |
| MDMartins Dairy Service INC | Fresno | CA | — | ◇ UNVERIFIED |
| MSMartin Sheet Metal, INC. | Amarillo | TX | — | ◇ UNVERIFIED |
| MSMartin Steel Constructors | Eleele | HI | — | ◇ UNVERIFIED |
| MTMartin Technology | Rockford | IL | — | ◇ UNVERIFIED |
| MWMartin Welding and Fabrication LLC | Contoocook | NH | — | ◇ UNVERIFIED |
| MMMarvel Machining Enterprises LLC | Bensenville | IL | — | ◇ UNVERIFIED |
| MKMarvin Keller Trucking INC | Sullivan | IL | — | ◇ UNVERIFIED |
| MDMarx Digital Mfg, Inc | Las Vegas | NV | — | ◇ UNVERIFIED |
| MSMaryland Structural Fabricators INC | Millington | MD | — | ◇ UNVERIFIED |
| MLMascoat LLC | West Monroe | LA | — | ◇ UNVERIFIED |
| MHMascotte Home Security Products INC | Portland | OR | — | ◇ UNVERIFIED |
| MCMason Corporation | Jemison | AL | — | ◇ UNVERIFIED |
| MMMason Machinings INC | Morristown | TN | — | ◇ UNVERIFIED |
| MLMasonmarine.net LLC | San Dimas | CA | — | ◇ UNVERIFIED |
| MOMason & Overstreet Welding & Machine Works, INC. | Pearl | MS | — | ◇ UNVERIFIED |
| MSMason Structural Steel INC. | Walton Hills | OH | — | ◇ UNVERIFIED |
| MWMason West, INC | Placentia | CA | — | ◇ UNVERIFIED |
| MWMaspeth Welding, INC | New York | NY | — | ◇ UNVERIFIED |
| MCMass Custom Hauling INC | Milan | IL | — | ◇ UNVERIFIED |
| MMMassey Metals INC. | Tampa | FL | — | ◇ UNVERIFIED |
| MLMassivemake LLC | Orlando | FL | — | ◇ UNVERIFIED |
| MMMass Machine & Fabricating Company | Washington | PA | — | ◇ UNVERIFIED |
| MMMass. Machine, INC. | Westwood | MA | — | ◇ UNVERIFIED |
| MMMasteq Manufacturing, LLC | New Berlin | WI | — | ◇ UNVERIFIED |
| MBMaster Bilt Products Site 2 | New Albany | MS | — | ◇ UNVERIFIED |
| MMMastercraft Machine INC | West Valley City | UT | — | ◇ UNVERIFIED |
| MFMaster Fabrication LLC | Knoxville | IA | — | ◇ UNVERIFIED |
| MFMaster Feed Mills of Hillsboro, INC. | Hillsboro | OH | — | ◇ UNVERIFIED |
| MMMaster Machine, INC. | Houston | TX | — | ◇ UNVERIFIED |
| MMMaster Machine, INC. | Blaine | MN | — | ◇ UNVERIFIED |
| MMMaster Matic INC | Osseo | MN | — | ◇ UNVERIFIED |
| MSMaster Sheet Metal, INC. | Schofield Barracks | HI | — | ◇ UNVERIFIED |
 Masters Machine, LLC | Richmond | MI | — | ◇ UNVERIFIED |
| Masters Machine Shop INC | Mankato | MN | — | ◇ UNVERIFIED |
| MPMasters Precision Machining Inc. | Kent | OH | — | ◇ UNVERIFIED |
| MSMaster Swaging, INC. | Jackson Center | OH | — | ◇ UNVERIFIED |
| MHMastic Home Exteriors, INC. | Sidney | OH | — | ◇ UNVERIFIED |
| MCMasto Contractor Services INC | Albuquerque | NM | — | ◇ UNVERIFIED |
| MPMast Productions, INC. | Payson | IL | — | ◇ UNVERIFIED |
| MMMatcon Manufacturing INC | Cordova | IL | — | ◇ UNVERIFIED |
| MMMatcor Metal Fabrication | Morton | IL | — | ◇ UNVERIFIED |
| MCMaterial Control Systems, INC. | Cordova | IL | — | ◇ UNVERIFIED |
| MHMaterial Handling Technologies, INC. | North Syracuse | NY | — | ◇ UNVERIFIED |
| MHMaterial Handling Technology | Fair Haven | MI | — | ◇ UNVERIFIED |
| MRMaterial Resources INC | Forest Grove | OR | — | ◇ UNVERIFIED |
| MMMaterials Management, Inc. | Easley | SC | — | ◇ UNVERIFIED |
| MSMaterial Supply INC. | Las Vegas | NV | — | ◇ UNVERIFIED |
| MOMatha Oil CORP Dba Citgo | Oak Park | IL | — | ◇ UNVERIFIED |
| MEMathis Excavating INC | Carbondale | IL | — | ◇ UNVERIFIED |
| MHMatic Hydraulics, INC. | College Point | NY | — | ◇ UNVERIFIED |
 Matrix Machine & Manufacturing LLC | Broomfield | CO | — | ◇ UNVERIFIED |
| MMMatrix Machining Inc. | Neenah | WI | — | ◇ UNVERIFIED |
| MNMatrix National Investment CORP | Galena | IL | — | ◇ UNVERIFIED |
| MTMatrix Tooling & Design INC | Ramsey | MN | — | ◇ UNVERIFIED |
| MIMattei, INC. | Harlingen | TX | — | ◇ UNVERIFIED |
| MMattershift | Eden Prairie | MN | — | ◇ UNVERIFIED |
| MIMattessich Iron, LLC | Memphis | NY | — | ◇ UNVERIFIED |
| MIMattessich Iron, LLC | Baldwinsville | NY | — | ◇ UNVERIFIED |
| MBMatthew Bronze West Annex Facility | Kingwood | WV | — | ◇ UNVERIFIED |
| MBMatthews Blow Pipe CO INC | Memphis | TN | — | ◇ UNVERIFIED |
| MEMatthewson Equipment | Johnston | RI | — | ◇ UNVERIFIED |
| MQMatthews Quality Construction INC | Clovis | CA | — | ◇ UNVERIFIED |
| MMMatt Machine & Manufacturing, INC. | Pittsburgh | PA | — | ◇ UNVERIFIED |
| MMMatt Mcginn | Rock Falls | IL | — | ◇ UNVERIFIED |
| MJMattoon Jumpin Jimmys | Mattoon | IL | — | ◇ UNVERIFIED |
| MJMattoon Jumpin Jimmys | Mattoon | IL | — | ◇ UNVERIFIED |
| MIMatx INC | Peoria | IL | — | ◇ UNVERIFIED |
| MMaudlin | Kemah | TX | — | ◇ UNVERIFIED |
| MTMaulding Trucking INC | Casey | IL | — | ◇ UNVERIFIED |
| MMMaupins Machine Shop | Dodge City | KS | — | ◇ UNVERIFIED |
| MBMaura Buildings, Incorporated | Lebanon | PA | — | ◇ UNVERIFIED |
