| Municiopio Autonomo de Fajardo PR | Public Administration | 0 | — | F |
| Municipal Ambulance Service d/b/a Amery Area EMS WI | Healthcare & Social Assistance | 0 | — | A |
| Municipal District Services, LLC TX | Utilities | 0 | — | F |
| Municipal Electric Authority of Georgia GA | Utilities | 0 | — | A |
| Municipal Employees' Retirement System of Michigan MI | Finance & Insurance | 1 | $88,607 | — |
| Municipal Maintenance Co. NJ | Utilities | 0 | — | A |
| Municipal Pipe Co. LLC NY | Construction | 0 | — | A |
| Municipal Pipe Tool Company, LLC IA | Construction | 0 | — | F |
| MUNICIPAL TESTING LABORATORY, INC. NY | Professional & Technical Services | 1 | $86,757 | — |
| Municipal Theatre Association of St. Louis MO | Arts & Entertainment | 0 | — | F |
| Municipal Treatment Equipment CO | Wholesale Trade | 0 | — | A |
| Municipality of Anchorage AK | Public Administration | 0 | — | A |
| Municipality of Anchorage AWWU AK | Utilities | 0 | — | F |
| Municipality of Anchorage City Hall AK | Public Administration | 0 | — | A |
| Municipality of Anchorage Eagle River Library AK | Information & Media | 0 | — | A |
| Municipality of Anchorage Girdwood Library AK | Information & Media | 0 | — | A |
| Municipality of Anchorage Health Department AK | Public Administration | 0 | — | C |
| Municipality of Anchorage Loussac Library AK | Information & Media | 0 | — | A |
| Municipality of Anchorage Merrill Field AK | Transportation & Warehousing | 0 | — | F |
| Municipality of Anchorage Mountain View Library AK | Information & Media | 0 | — | A |
| Municipality of Anchorage Muldoon Library AK | Information & Media | 0 | — | A |
| Municipality of Anchorage OEM AK | Public Administration | 0 | — | A |
| Municipality of Anchorage Parks and Recreation AK | Public Administration | 0 | — | F |
| Municipality of Anchorage Police Department AK | Public Administration | 0 | — | A |
| Municipality of Anchorage Port AK | Administrative & Waste Services | 0 | — | A |
| Municipality of Anchorage Public Transportation AK | Transportation & Warehousing | 0 | — | F |
| MUNICIPIO AUTONOMO DE CAGUAS PR | Public Administration | 0 | — | D |
| Municipio Autonomo de Fajardo PR | Public Administration | 0 | — | F |
| Municipio Autonomo de Guayama PR | Construction | 0 | — | F |
| Municipio de Barceloneta PR | Public Administration | 0 | — | F |
| MUNICIPIO DE CIDRA PW | Public Administration | 0 | — | D |
| Municipio de Las Marias PR | Public Administration | 0 | — | A |
| MUNICIPIO DE RIO GRANDE PR | Public Administration | 0 | — | B |
| MUNICIPIO DE SAN LORENZO AP | Public Administration | 0 | — | A |
| MUNICIPIO DE SAN LORENZO PR | Public Administration | 0 | — | A |
| Municipio de Yauco PR | Public Administration | 0 | — | D |
| MUNICIPIO LAS MARIAS PR | Public Administration | 0 | — | D |
| MUNICIPIO LAS MARIAS (SERVICIOS A LA COMUNIDAD) PR | Public Administration | 0 | — | F |
| Munidex, Inc. NJ | Information & Media | 1 | $85,530 | — |
| Muniz Concrete & Contracting, TX | Construction | 0 | — | A |
| Munn Manufacturing Company MI | Manufacturing | 0 | — | A |
| Munn-Express Delivery and Logistics, LLC NC | Transportation & Warehousing | 0 | — | F |
| Munot Plastics, Inc. PA | Manufacturing | 0 | — | D |
| MUNRO AND ASSOCIATES, INC MI | Professional & Technical Services | 1 | $115,000 | — |
| Munro Associates llc, dba The Vault MA | Retail Trade | 0 | — | A |
| Munro Associates, llc, dba The Vault MA | Retail Trade | 0 | — | A |
| Munro Companies, Inc CO | Retail Trade | 0 | — | A |
| Munsch Hardt Kopf & Harr P.C. TX | Professional & Technical Services | 0 | — | A |
| Munselle Vineyards CA | Agriculture & Forestry | 0 | — | F |
| Munson Electric IA | Construction | 0 | — | A |
