| Michigan Solar Solutions MI | Construction | 0 | — | A |
| Michigan Specialty Coatings, Inc MI | Construction | 0 | — | A |
| Michigan Spine Management Clinic PLC MI | Healthcare & Social Assistance | 2 | $79,560 | — |
| Michigan Spring & Stamping of Muskegon, LLC MI | — | 0 | — | — |
| Michigan spring and Stamping MI | Manufacturing | 0 | — | C |
| Michigan State Police MI | Public Administration | 0 | — | F |
| Michigan State University MI | Educational Services | 102 | $89,066 | C |
| Michigan Sugar Company MI | Manufacturing | 0 | — | F |
| Michigan Sugar Company OH | — | 0 | — | — |
| Michigan Technological University MI | Educational Services | 11 | $74,555 | — |
| MICHIGAN TIMBER & TRUSS MI | Manufacturing | 0 | — | A |
| Michigan Truck Spring of Saginaw Inc. MI | Retail Trade | 0 | — | F |
| MICHIGAN TUBE SWAGER FSBRICAT INC MI | Manufacturing | 0 | — | F |
| Michigan Turkey Producers LLC MI | Manufacturing | 0 | — | D |
| Michigan Valley Irrigation II MI | Other Services | 0 | — | A |
| Michigan Vein Care Specialists MI | Healthcare & Social Assistance | 0 | — | A |
| Michigan Waste Energy MI | — | 0 | — | — |
| Michigan Wheel Operations LLC MI | Manufacturing | 0 | — | F |
| Michigan Window Supply MI | Manufacturing | 0 | — | F |
| Michigan Wood Fibers MI | Manufacturing | 0 | — | F |
| Michigan Works Southeast Consortium dba Michigan Works! Southeast MI | Healthcare & Social Assistance | 0 | — | C |
| Michilli Inc NY | Construction | 0 | — | A |
| Michoacan Super, Inc. CA | Retail Trade | 0 | — | A |
| Mick's Plumbing & Heating, Inc MD | Construction | 0 | — | A |
| Mickelsen Accents Inc. ID | Construction | 0 | — | F |
| MICKELSEN CONSTRUCTION, INC. ID | Construction | 0 | — | D |
| Mickelsen Farms, LLC ID | Agriculture & Forestry | 0 | — | D |
| Mickelson Enterprises, Inc. CA | Construction | 0 | — | F |
| Mickelson Metal Works, LLC OK | Manufacturing | 0 | — | A |
| Mickey Thomspon Tires & Wheels CA | Manufacturing | 0 | — | A |
| Mickey Truck Bodies NC | Manufacturing | 0 | — | F |
| MICKEY WALL PAINTING, INC. CA | Construction | 0 | — | A |
| Mickey's Linen IL | Other Services | 0 | — | F |
| Mickey's Linen & Towel Supply IN | Other Services | 0 | — | F |
| Mickeys Linen and Towel Supply Inc WI | — | 0 | — | — |
| Mickeys Linene IL | Other Services | 0 | — | F |
| Mickle Enterprises Inc OR | Transportation & Warehousing | 0 | — | F |
| Mickman Bros Inc MN | Administrative & Waste Services | 0 | — | A |
| MICO MN | — | 0 | — | — |
| MICOLAS MILLS (JOHNSTON TEXTILES-2) AL | — | 0 | — | — |
| Micon Construction Inc CA | Construction | 0 | — | F |
| MICON Group, Inc. WI | Management of Companies | 0 | — | A |
| MIControls OR | Wholesale Trade | 0 | — | F |
| MIControls - Seattle WA | Wholesale Trade | 0 | — | A |
| Micrel, Inc. CA | — | 0 | — | — |
| Micro CA | Wholesale Trade | 0 | — | A |
| Micro Auto Paint & Supplies MI | Wholesale Trade | 0 | — | B |
| Micro Chem Company, LLC GA | Manufacturing | 0 | — | A |
| Micro Commercial Components CA | Wholesale Trade | 0 | — | D |
| Micro Control Company MN | Manufacturing | 0 | — | F |
