| Metropolitan Transit System CA | - | 0 | - | - |
| Metropolitan Utilities District NE | - | 2 | $138,673 | - |
| Metropolitan Warehouse & Delivery CA | Transportation & Warehousing | 0 | - | F |
| Metropolitan Warehouse & Delivery TX | Transportation & Warehousing | 0 | - | F |
| Metropolitan Washington Airports Authority DC | Transportation & Warehousing | 0 | - | C |
| Metropolitan Washington Airports Authority VA | Transportation & Warehousing | 4 | $168,134 | B |
| Metropolitan Water District of Southern California CA | Utilities | 0 | - | D |
| Metropolitan Water Reclamation District of Greater Chicago IL | Utilities | 0 | - | F |
| Metropolitan YMCA NJ | - | 0 | - | - |
| MetroStar Express LLC CA | - | 0 | - | - |
| Metrostudy, Inc. CA | Professional & Technical Services | 1 | $92,000 | - |
| MetroWall LLC NY | Manufacturing | 2 | $127,126 | - |
| Metrowest Dental Center, Inc. MA | - | 1 | $208,000 | - |
| Metrowest Med Ctr Leonard Morse MA | Healthcare & Social Assistance | 0 | - | F |
| MetroWest Package, Inc. MA | - | 0 | - | - |
| Metrowide Insurance Services CA | - | 1 | $81,182 | - |
| Metso McCloskey USA, LLC WI | Manufacturing | 0 | - | F |
| Metso Minerals PA | - | 0 | - | - |
| Metso Minerals Industries, Inc./Stephens-Adamson MS | - | 0 | - | - |
| Metso USA Inc. WI | Other Services | 5 | $171,200 | A |
| Mettiki Coal (WV), LLC WV | - | 0 | - | - |
| Mettle Solutions, LLC MD | Professional & Technical Services | 7 | $149,240 | - |
| Mettler Toldeo Rainin, LLC CA | Manufacturing | 0 | - | C |
| Mettler Toledo OH | Manufacturing | 0 | - | D |
| Mettler Toledo Rainin, LLC CA | Manufacturing | 1 | $142,526 | A |
| Mettler-Toledo Autochem, Inc. MD | Professional & Technical Services | 2 | $113,650 | - |
| Mettler-Toledo AutoChem, Inc. WA | - | 0 | - | - |
| Mettler-Toledo Rainin, LLC CA | Manufacturing | 1 | $128,875 | - |
| Mettler-Toledo, LLC FL | Manufacturing | 1 | $93,447 | - |
| Mettler-Toledo, LLC OH | Manufacturing | 7 | $147,851 | - |
| Mettler-Toledo, LLC (US-MO Division) OH | Manufacturing | 0 | - | D |
| Mettler-Toledo, LLC Hi-Speed Division NY | - | 0 | - | - |
| Metz Culinary Management LLC FL | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC GA | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC KY | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC ME | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC MI | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC NY | Accommodation & Food Services | 0 | - | F |
| Metz Culinary Management LLC PA | Accommodation & Food Services | 0 | - | F |
| Metz Flooring Inc. NC | - | 1 | $63,128 | - |
| Metz Personnel / Nor-Am NH | - | 0 | - | - |
| Metzler Brothers Transport PA | Transportation & Warehousing | 0 | - | D |
| MeUndies, Inc. CA | - | 0 | - | - |
| Mevion Medical Systems, Inc. MA | Manufacturing | 7 | $83,200 | D |
| Mewbourne Oil Company TX | Mining & Extraction | 0 | - | F |
| Mews Systems Inc DE | Professional & Technical Services | 1 | $94,000 | - |
| Mews Systems Inc TX | - | 4 | $240,000 | - |
| MEXAMENT LLC dba MEXAMENT NY | - | 0 | - | - |
| MEXCHESTER LLC dba BLOCKHEADS BURRITOS NY | - | 0 | - | - |
| Mexi-Grill LLC CA | - | 0 | - | - |