| MSI GA | Manufacturing | 0 | - | F |
| MSI Express, Inc. IL | Manufacturing | 0 | - | B |
| MSI Express, Inc. IN | Manufacturing | 4 | $80,759 | A |
| MSI Express, Inc. WI | Manufacturing | 0 | - | D |
| MSIT Systems Inc TX | Professional & Technical Services | 5 | $96,096 | - |
| mSix Communications LLC NY | Professional & Technical Services | 6 | $163,000 | - |
| MSKV Technologies Inc TX | Professional & Technical Services | 2 | $107,500 | - |
| MSL Community Management LLC AZ | Healthcare & Social Assistance | 0 | - | F |
| MSL Community Management LLC CA | Healthcare & Social Assistance | 0 | - | F |
| MSL Community Management LLC CO | Healthcare & Social Assistance | 0 | - | F |
| MSL Community Management LLC OR | Healthcare & Social Assistance | 0 | - | F |
| MSL Community Management LLC UT | Healthcare & Social Assistance | 0 | - | D |
| MSL Community Management LLC WA | Healthcare & Social Assistance | 0 | - | F |
| MSN Enterprises MI | Retail Trade | 0 | - | F |
| MSO of Kings County, LLC NY | - | 0 | - | - |
| MSP Enterprises, LLC dba Sea Glass Hospitality Partners CA | - | 0 | - | - |
| MSP Industries LLC FL | Manufacturing | 0 | - | B |
| MSPCA-Angell MA | Other Services | 0 | - | F |
| MSQ Partners NA, LLC NY | Professional & Technical Services | 1 | $198,450 | - |
| Msquare Systems INC VA | Professional & Technical Services | 3 | $97,833 | - |
| Msquare Technologies INC PA | Professional & Technical Services | 2 | $123,209 | - |
| Msr Technology Group LLC CA | Professional & Technical Services | 11 | $100,069 | - |
| Msr Technology Group LLC DE | Professional & Technical Services | 96 | $100,875 | - |
| Msr Technology Group LLC. NJ | Professional & Technical Services | 1 | $151,840 | - |
| Msrcosmos LLC CA | Professional & Technical Services | 12 | $99,346 | - |
| MSRE Management, L.L.C., dba Martin Selig Real Estate WA | - | 0 | - | - |
| MSRS dba VM International CA | Manufacturing | 0 | - | F |
| MSS Energy Holdings LLC FL | Utilities | 1 | $184,500 | - |
| MSS Solutions NC | Construction | 0 | - | B |
| Mssc KY | Manufacturing | 0 | - | F |
| MST Concrete Products SC | Manufacturing | 0 | - | F |
| MSU Health Care Laboratories MI | Healthcare & Social Assistance | 0 | - | F |
| MSX International RNS LLC MI | Administrative & Waste Services | 1 | $83,158 | A |
| Msys INC DC | Professional & Technical Services | 4 | $97,146 | - |
| Mt & Associates, LLC FL | Professional & Technical Services | 2 | $110,000 | - |
| Mt Baker Products WA | Manufacturing | 0 | - | F |
| Mt Laurel Supermarket Inc. NJ | Retail Trade | 0 | - | A |
| Mt Ogden Health and Rehabilitation Center UT | Healthcare & Social Assistance | 0 | - | F |
| MT Transportation Logistics Services Inc. NY | - | 0 | - | - |
| Mt Vernon Mills GA | Manufacturing | 0 | - | B |
| Mt. Bethel Management Company NJ | Healthcare & Social Assistance | 0 | - | - |
| Mt. Clifton Fruit Company, LLC VA | Agriculture & Forestry | 0 | - | F |
| Mt. Diablo Unified School District CA | Educational Services | 4 | $92,446 | - |
| Mt. Holly Springs Specialty Paper, Inc. PA | Manufacturing | 0 | - | F |
| Mt. Hood Meadows, OREG., LLC. OR | Arts & Entertainment | 1 | $58,522 | - |
| Mt. Olympus Enterprises Inc WI | Arts & Entertainment | 0 | - | A |
| Mt. San Antonio Gardens CA | Healthcare & Social Assistance | 0 | - | - |
| Mt. West Research Center ID | - | 0 | - | - |
| Mt.Hood Forest Products LLC OR | Manufacturing | 0 | - | F |
| MTA New York City Transit (TA) (and subsidiary, the Manhattan & Bronx Surface Transit Operating Authority) NY | - | 0 | - | - |
