| mcdonalds MI | Accommodation & Food Services | 0 | — | A |
| Mcdonalds (Delta Terminal #5) CA | — | 0 | — | — |
| McDonalds Restaurants of California, Inc. CA | — | 0 | — | — |
| McDonnell and McMann Pediatric Dentistry, PLLC dba The Smile Lodge NY | — | 0 | — | — |
| McDonnell Landscape, Inc. MD | Administrative & Waste Services | 0 | — | D |
| McDonnell Roofing Inc CA | Construction | 0 | — | A |
| McDonough Construction Rentals, Inc CA | Construction | 0 | — | A |
| McDonough Construction Rentals, Inc FL | Construction | 0 | — | A |
| McDonough Construction Rentals, Inc GA | Construction | 0 | — | A |
| McDonough Construction Rentals, Inc MD | Construction | 0 | — | A |
| McDonough Construction Rentals, Inc TX | Construction | 0 | — | D |
| McDonough County IL | Healthcare & Social Assistance | 0 | — | F |
| McDonough County Hospital District IL | Healthcare & Social Assistance | 2 | $53,685 | C |
| Mcdonough Holland & Allen Pc CA | — | 0 | — | — |
| McDonough Mfg. WI | Manufacturing | 0 | — | F |
| McDonough Toyota VA | Retail Trade | 0 | — | C |
| McDorman Construction Inc FL | Construction | 0 | — | F |
| McDowall Company MN | Construction | 0 | — | A |
| McDowell & Walker Inc NY | Manufacturing | 0 | — | A |
| McDowell and Sons Contractors, Inc IA | Construction | 0 | — | A |
| McDowell ARH KY | Healthcare & Social Assistance | 0 | — | F |
| McDowell Crane & Rigging IA | Construction | 0 | — | A |
| McDowell Family 24-12 Markets LLC WA | Retail Trade | 0 | — | D |
| McDowell Mountain Golf Club/ Arcis Golf AZ | Construction | 0 | — | A |
| McDowell NW Inc. WA | Construction | 0 | — | A |
| McDowell NW Pile King WA | Construction | 0 | — | A |
| McDowell Technical Community College NC | Educational Services | 1 | $44,138 | — |
| McDowell-Craig Office Systems CA | Manufacturing | 0 | — | F |
| MCE Corporation CA | Construction | 0 | — | F |
| MCE Framing CA | Construction | 0 | — | A |
| MCE Leasing TX | Construction | 0 | — | F |
| McElhenney Construction Company, LLC AL | Construction | 0 | — | A |
| McElroy Contract Packaging, Inc. OH | Manufacturing | 0 | — | D |
| McElroy Electric KS | Construction | 0 | — | A |
| McElroy Metal CA | Manufacturing | 0 | — | F |
| McElroy Metal GA | Manufacturing | 0 | — | C |
| McElroy Metal IL | Manufacturing | 0 | — | F |
| McElroy Metal LA | Manufacturing | 0 | — | F |
| McElroy Metal MI | Manufacturing | 0 | — | A |
| McElroy Metal TX | Manufacturing | 0 | — | F |
| McElroy Metal VA | Manufacturing | 0 | — | F |
| McElroy's Inc. KS | Construction | 0 | — | F |
| MCELVANY, INC. CA | Construction | 0 | — | F |
| McEnany Roofing, Inc FL | Construction | 0 | — | F |
| McEntire Produce SC | Agriculture & Forestry | 0 | — | F |
| McEwen Northside Apartments TN | Real Estate | 0 | — | F |
| MCF - Lino Lakes MN | Public Administration | 0 | — | F |
| MCF CONSTRUCTION AND CONSULTANTS, INC FL | Construction | 0 | — | A |
| MCF Environmental Services GA | Administrative & Waste Services | 0 | — | F |
| MCF-Lino Lakes MN | Public Administration | 0 | — | F |
