| Master of Arts in Counseling Psychology | Academic & Science |
| Master, American College of Physicians | Academic & Science |
| Massachusetts Association of Consulting Planners | Business |
| Michigan Association of Chiefs of Police | Business |
| Manipulation Association of Chartered Physiotherapists | Business |
| Manhole Assessment and Certification Program | Certifications |
| Manhole Assessment Certification Program | Certifications |
| Musculoskeletal Association of Chartered Physiotherapists | Community |
| Michigan Association of Chamber Professionals | Community |
| Master of Arts in Christian Practice | Community |
| Mid America Conference on Preaching | Community |
| Music Authors Copyright Protection | Community |
| Mobile Associate Communication Platform | Computing |
| Microsoft Advertising Certified Professional | Computing |
| Moroccan American Center for Policy | General |
| Michigan Arthritis Collaborative Partnership | General |
| Michigan Assigned Claims Plan | General |
| Maximum Allowable Casing Pressure | General |
| meningococcal A C polysaccharide | General |
| Margaret A Cargill Philanthropies | General |
| Mincra Arreta Che Palone | General |
| Modern Army Combatives Program | Governmental |
| Modified Assured Career Progression | Governmental |
| Massachusetts Alliance for Chiropractic Philosophy | Governmental |
| Mountain Areas Conservancy Project | Governmental |
| Meningococcal A + C Polysaccharide vaccine | Medical |
| Marine Aviation Campaign Plan | Military and Defence |
| Mortuary Affairs Collection Point | Military and Defence |
| Military Aid To The Civil Power | Military and Defence |
