| MCI CA | Other Services | 0 | — | F |
| MCI NJ | Other Services | 0 | — | A |
| MCI TX | Other Services | 0 | — | A |
| MCI Sales & Service Inc IL | Other Services | 0 | — | F |
| McIlhenny Company LA | Manufacturing | 0 | — | B |
| McIlwain School Bus Lines, Inc. PA | Transportation & Warehousing | 0 | — | D |
| MCINCR - MCB QUANTICO VA | Administrative & Waste Services | 0 | — | C |
| McInelly Trucking Inc UT | Transportation & Warehousing | 0 | — | C |
| McInnis Brothers Construction, Inc. LA | Construction | 0 | — | A |
| McInnis Construction, LLC AL | Construction | 0 | — | A |
| McInnis Electric Company GA | Construction | 0 | — | A |
| McInnis Systems MS | Construction | 0 | — | A |
| McIntosh Box & Pallet Co., Inc. MD | Manufacturing | 0 | — | F |
| McIntosh Box & Pallet Co., Inc. NC | Manufacturing | 0 | — | F |
| McIntosh Box & Pallet Co., Inc. NH | Manufacturing | 0 | — | F |
| McIntosh Box & Pallet Co., Inc. NY | Manufacturing | 0 | — | F |
| McIntosh Box & Pallet Co., Inc. VA | Manufacturing | 0 | — | F |
| McIntosh Box & Pallet Co., Inc. WV | Manufacturing | 0 | — | F |
| McIntosh Corporation OK | Construction | 0 | — | B |
| McIntosh Laboratory Inc. NY | Manufacturing | 0 | — | A |
| MCINTOSH SENIOR LIVING MN | Healthcare & Social Assistance | 1 | $76,648 | — |
| McIntyre Construction Inc. OR | Construction | 0 | — | A |
| McIntyre Labor Services, LLC. CA | Agriculture & Forestry | 0 | — | F |
| McIntyre Ski Area LLC NH | Arts & Entertainment | 0 | — | F |
| McIntyre, Elwell & Strammer General Contractors, Inc. FL | Construction | 0 | — | B |
| MCK Building Associates, Inc. NY | Construction | 0 | — | A |
| MCK Trucking MS | Transportation & Warehousing | 0 | — | F |
| MCK Trucking TN | Transportation & Warehousing | 0 | — | A |
| MCK Trucking, Inc. AL | Transportation & Warehousing | 0 | — | D |
| MCK Trucking, Inc. NY | Transportation & Warehousing | 0 | — | A |
| MCK Trucking, Inc. OH | Transportation & Warehousing | 0 | — | F |
| MCK Trucking, Inc. TX | Transportation & Warehousing | 0 | — | F |
| McKamish, Inc. PA | Construction | 0 | — | A |
| McKay Books, Inc. TN | — | 0 | — | — |
| McKay Farms OR | Agriculture & Forestry | 0 | — | A |
| McKay Healthcare LLC TX | Healthcare & Social Assistance | 0 | — | F |
| McKay Nursery Company WI | Agriculture & Forestry | 0 | — | C |
| McKean Farms, Inc. CA | Agriculture & Forestry | 0 | — | A |
| McKearney Asphalt MI | Construction | 0 | — | D |
| McKee & Company Electric CA | Construction | 0 | — | F |
| McKee Door Sales of Columbus, Inc. OH | Construction | 0 | — | A |
| Mckee Enterprises Inc OR | Arts & Entertainment | 0 | — | C |
| McKee Foods Corporation MI | Manufacturing | 0 | — | B |
| McKee Foods Corporation TN | Manufacturing | 0 | — | F |
| McKee Foods Corporation VA | Manufacturing | 0 | — | F |
| McKee Foods Corporation and Affiliates AR | Manufacturing | 0 | — | D |
| McKee Foods Transportation AR | Transportation & Warehousing | 0 | — | F |
| McKee Foods Transportation AZ | Transportation & Warehousing | 0 | — | F |
| McKee Foods Transportation VA | Transportation & Warehousing | 0 | — | D |
| McKee Management Associates, Inc. PA | Construction | 0 | — | F |
