| MAC Plastics Manufacturing, Inc. IL | Manufacturing | 0 | — | D |
| Mac Practice NE | — | 0 | — | — |
| Mac Property Management, LLC NJ | Real Estate | 0 | — | F |
| MAC Staffing Group TX | Administrative & Waste Services | 0 | — | A |
| Mac Tools, Inc. OH | Transportation & Warehousing | 0 | — | A |
| MAC Trailer Enterprises, Inc OR | Manufacturing | 0 | — | B |
| MAC Trailer Enterprises, Inc. OH | Manufacturing | 1 | $90,066 | A |
| MAC Trailer Mfg. OH | Manufacturing | 0 | — | C |
| MAC Transportation LLC TX | Transportation & Warehousing | 0 | — | F |
| MAC's MN | Retail Trade | 0 | — | A |
| Mac's Bar and Grill MN | — | 0 | — | — |
| Mac's Construction Company Incorporated MS | Construction | 0 | — | A |
| Mac's Custom Tie-Downs ID | Manufacturing | 0 | — | A |
| Mac's Farm Labor Contracting, Inc CA | Agriculture & Forestry | 0 | — | A |
| Mac's Insulation Co., Inc. TX | Construction | 0 | — | F |
| Mac's Snacks TX | Manufacturing | 0 | — | A |
| MAC, Inc. AL | Administrative & Waste Services | 0 | — | A |
| Mac-Mold Base, Inc. MI | Manufacturing | 0 | — | F |
| Mac5 Construction LLC CA | Construction | 0 | — | A |
| Macadaw Corp AZ | Accommodation & Food Services | 0 | — | D |
| Macalester College MN | Educational Services | 4 | $74,000 | — |
| Macali's Deluxe Supermarkets Inc. OH | Retail Trade | 0 | — | A |
| MacAljon/ SCL, Inc. GA | Construction | 0 | — | C |
| MACALLAN CONSTRUCTION, LLC NC | Construction | 0 | — | A |
| Macallister Machinery LLC IN | Other Services | 0 | — | A |
| Macallister Machinery LLC MI | Other Services | 0 | — | A |
| Macannie MD | Professional & Technical Services | 3 | $180,000 | — |
| Macapa Logistics IA | Administrative & Waste Services | 0 | — | F |
| Macar & Sons, Inc FL | Wholesale Trade | 1 | $117,562 | — |
| MACARA Vehicle Services, Inc. CT | Other Services | 0 | — | A |
| Macaran Printed Products NY | Manufacturing | 0 | — | F |
| Macari Vineyards and Winery Ltd NY | Manufacturing | 0 | — | A |
| MacArthur Co MN | Wholesale Trade | 0 | — | A |
| MacArthur Co WI | Wholesale Trade | 0 | — | D |
| MacArthur Company IA | Manufacturing | 0 | — | F |
| MacArthur Company MO | Manufacturing | 0 | — | F |
| MacArthur Park Corporation dba MacArthur Park Restaurant CA | — | 0 | — | — |
| MacArthur, AWT Grand Blanc MI | Manufacturing | 0 | — | F |
| MacArtney Inc. TX | Wholesale Trade | 0 | — | A |
| Macatawa Area Express Transit Authority MI | Transportation & Warehousing | 0 | — | A |
| Macawber Engineering Inc. TN | Manufacturing | 0 | — | F |
| MacBeath Hardwood Company IN | Manufacturing | 0 | — | F |
| MACCABEE INDUSTRIAL, INC. PA | Construction | 0 | — | A |
| MacCall Management, LLC UT | Accommodation & Food Services | 0 | — | F |
| Macclenny BBQ LLC FL | Accommodation & Food Services | 0 | — | F |
| Macco's Floor Covering Center, Inc. WI | Retail Trade | 0 | — | D |
| Maccor, Inc. OK | Manufacturing | 0 | — | C |
| MACCORMACK PLUMBING, INC. MA | Construction | 0 | — | F |
| MACCORP IA | Manufacturing | 0 | — | A |
| MacDermid Enthone MI | Manufacturing | 0 | — | F |
