| Marshfield Care Center MO | Healthcare & Social Assistance | 0 | - | - |
| Marshfield Clinic WI | Healthcare & Social Assistance | 21 | $115,128 | - |
| Marshfield Clinic Health System WI | - | 0 | - | - |
| Marshfield Clinic Healthcare System WI | Healthcare & Social Assistance | 0 | - | F |
| Marshfield Food Safety Services NE | - | 0 | - | - |
| Marshfield Furniture LLC WI | Manufacturing | 0 | - | F |
| Marsing Agricultural Labor Sponsorship Committee ID | Agriculture & Forestry | 0 | - | C |
| Marsol Technologies, Inc. TX | Professional & Technical Services | 2 | $103,200 | - |
| Marson International LLC IN | Manufacturing | 1 | $78,000 | A |
| Mart Fresh Pack LLC ID | Manufacturing | 0 | - | D |
| Martco, L.L.C. LA | Manufacturing | 0 | - | A |
| Martello Re Services Company LLC NC | Finance & Insurance | 2 | $180,000 | - |
| Martex Fiber SC | Manufacturing | 0 | - | B |
| Martha & Mary Health Services WA | Healthcare & Social Assistance | 0 | - | F |
| Martha Jefferson Medical Group LLC VA | Healthcare & Social Assistance | 4 | $270,000 | - |
| Martha Lloyd Community Services PA | Healthcare & Social Assistance | 0 | - | - |
| Martha Stewart Living Omnimedia, Inc. NY | - | 0 | - | - |
| Martha's Vineyard Hospital MA | Healthcare & Social Assistance | 0 | - | F |
| Martian Leanrning INC CA | Professional & Technical Services | 1 | $75,650 | - |
| Martian Learning, Inc. CA | Professional & Technical Services | 1 | $410,000 | - |
| Martian Mobility Inc. CA | - | 1 | $148,699 | - |
| Martignetti Companies, Inc. MA | Wholesale Trade | 0 | - | F |
| Martin Bros. Distributing Co., Inc. - Cedar Falls, IA IA | Wholesale Trade | 0 | - | D |
| Martin Brudnizki Design Studio LLC NY | Professional & Technical Services | 2 | $79,747 | - |
| Martin Cement Company IL | Construction | 0 | - | F |
| Martin Concrete Construction, Inc. GA | Construction | 0 | - | D |
| Martin Couny Health Care KY | Healthcare & Social Assistance | 0 | - | - |
| Martin Distributing Company INC WV | Wholesale Trade | 0 | - | F |
| Martin Drugs Of Riverhead INC. NY | Retail Trade | 1 | $121,014 | - |
| Martin Electric TN | - | 0 | - | - |
| Martin Flyer Jewelry LLC NY | Wholesale Trade | 1 | $79,900 | - |
| Martin Jefferson & Sons CA | - | 0 | - | - |
| Martin K. Eby Construction Co., Inc. KS | Construction | 0 | - | D |
| Martin Kimmel Architecture Site, Inc. PA | Professional & Technical Services | 1 | $70,000 | - |
| Martin Law, LLC PA | Professional & Technical Services | 1 | $50,000 | - |
| Martin Luther College MN | Educational Services | 0 | - | C |
| Martin Luther School NY | Educational Services | 2 | $39,000 | - |
| Martin Marietta Materials Inc. TX | Manufacturing | 0 | - | A |
| Martin Marietta Materials, Inc. NC | Management of Companies | 6 | $138,448 | A |
| Martin Memorial Health Systems, Inc. FL | Healthcare & Social Assistance | 0 | - | F |
| Martin Metal LLC MO | Construction | 0 | - | F |
| Martin Mills LA | - | 0 | - | - |
| Martin Mills/Fruit of the Loom MS | - | 0 | - | - |
| Martin Painting & Coating Co. OH | Construction | 1 | $101,452 | A |
| Martin Rubber Corporation CA | - | 0 | - | - |
| Martin Sprocket & Gear INC. AR | Manufacturing | 0 | - | F |
| Martin Sprocket & Gear INC. NY | Manufacturing | 0 | - | F |
| Martin Sprocket & Gear INC. TX | Manufacturing | 0 | - | F |
| Martin Sprocket & Gear, INC. TX | - | 1 | $111,405 | - |
| Martin Transport Inc. FL | Transportation & Warehousing | 0 | - | F |