| Mellow Medium Concave | Academic & Science |
| Methyl Mercury Chloride | Academic & Science |
| Modular Methods of Construction | Academic & Science |
| Modern Methods of Construction | Academic & Science |
| Marine Mammal Commission | Academic & Science |
| Mean of Multiple Computation | Academic & Science |
| Mean Medical Category | Academic & Science |
| Ciudad Mante | Airport Code |
| MS Management Console | Business |
| Marsh & McLennan Companies, Inc. | Business |
| Massachusetts Marketing Center | Business |
| Music Message Center | Business |
| Marsh & McLennan Companies, Incorporated | Business |
| Moeller Manufacturing Company | Business |
| Mitsubishi Motors Corporation | Business |
| Minowitz Manufacturing Company | Business |
| Mining and Metallurgical Company | Business |
| Metropolitan Mechanical Contractors | Business |
| Mule Management Console | Business |
| Motherboard Management Controller | Business Management |
| Maintenance Management Centre | Business Management |
| Methylmercuric Chloride | Chemistry |
| Monticello Motor Club | Community |
| Multi Media Center | Community |
| Medical Missions for Children | Community |
| Massachusetts Mechanic Center | Community |
| Machina Museum Committee | Community |
| Music Makers Club | Community |
| Monopolies and Mergers Commission | Community |
| Masters of Mass Communication | Community |
| Machina Muesum Committee | Community |
| Much Music Countdown | Community |
| Mickey Mouse Club | Community |
| The Micky Mouse Club | Community |
| Marine Mammal Center | Community |
| Michigan Music Conference | Community |
| Marijuana Media Connect | Community |
| Multiple Modulus Conversion | Computer and Networking |
| Man Machine Code | Computer Assembly Language |
| Multimedia Memory Cards | Computer Hardware |
| Maximum Material Condition | Computer Hardware |
| Modular Mission Computer | Computing |
| Module Mapping Control | Computing |
| Multi Media Catalog | Computing |
| Mobile Module Connector | Computing |
| Multi Media Commands | Computing |
| Matched Memory Cycle | Computing |
| Multi Media Company | Computing |
| Main Media Center | Computing |
| Minicomputer Maintenance Center | Computing |
| Multimedia Marketing Council | Computing |
| Malicious Mobile Code | Computing |
| Multimedia Messaging Center | Computing |
| Microcomputer Marketing Council | Computing |
| Multi Media Conference | Computing |
| Multi Media Computing | Computing |
| Mandatory Managed Copy | Computing |
| Microsoft Media Content | Computing |
| Multimedia Collaboration Service | Computing |
| Multipoint Mixing Controller | Computing |
| Mandriva Management Console | Computing |
| Microsoft Make Code | Computing |
| Microsoft Micro Console | Computing |
| Multi Media Card | Computing |
| Multi-Memory Controller | Computing |
| Media MIME Console | Computing |
| Master of Mass Communications | Educational Degree |
| Meharry Medical College | Educational Institute |
| Marymount Manhattan College | Educational Institute |
| Monolithic Multilayer Ceramic | Electronics |
| Multi-miniature Capacitor | Electronics |
| Matroska Multimedia Container | File Type |
| Mercedes Me Connect | General |
| Multiscale Microscopy Core | General |
| Mitsu Mania Crew | General |
| Major Model Change | General |
| Mitsubishi Motorsport Club | General |
| Merchant Mariner Credential | General |
| Matrix Motor Company | General |
| Marina Maher Communications | General |
| Multimedia Changer | General |
| Medicaid managed care | General |
| Multi Material Construction | General |
| Media Manifest Core | General |
| Marjaree Mason Center | General |
| Mixed Migration Centre | General |
| Middle Middle Class | General |
| Mario Masters Colosseum | General |
| Map Making Contest | General |
| Mitsubishi Motors Company | General |
| Mid Model Change | General |
| Morris Minor Club | General |
| Member Magic Circle | General |
| Motorcoach Marketing Council | General |
| Maiden Mother Crone | General |
| Milli-Meter Cube | General |
| Minimum Metallic Conductivity | General |
| Michigan Manufacturers Cup | General |
| Coastal Minelayer (Minecraft, Minelayer, Coastal) | General |
| Modulated Modularity Clustering | General |
| Mongolian Mining Consolidation | General |
| Morphing Match Chain | General |
| Multi Media Communications | General |
| Much More Colorful | General |
| MTU Module Control | General |
| Morgan Motor Company | General |
| Manifold Mounted Converter | General |
| Minor Model Change | General |
| Mille Miglia Coupe | General |
| Mazda Motor Corporation | General |
| Mitsuoka Motor Corporation | General |
| Mini Moke Club | General |
| Mopar Muscle Car | General |
| Mopar Motor Consulting | General |
| Million Mile Club | General |
| Maritime Miata Club | General |
| Mediterranee Morgan Club | General |
| Morris Minor Centre | General |
| Morris Minor Catalogue | General |
| Memphis Miata Club | General |
| Mini Motor Club | General |
| Massachusetts Motoring Club | General |
| Mersey Mini Club | General |
| Material Management Center | General |
| Marsh McLennan Cos | General |
| Multihazard Mitigation Council | Governmental |
| Chief Machinist's Mate | Governmental |
| Maine Medical Center | Governmental |
| Mobile Management Command | Governmental |
| Master Municipal Clerk | Governmental |
| Machinist's Mate Chief Petty Officer | Governmental |
| MAHAMANDIR | Indian Railway Station |
| Meet Me Centre | International |
| MyMotionCalendar | Internet |
| Maharashtra Medical Council | Maharashtra Government |
| Modernising Medical Careers | Medical |
| Migrating Motor Complex | Medical |
| Migrating Motility Complex | Medical |
| Macrophage-Mediated Cytotoxicity | Medical |
| Massive Myocardial Calcification | Medical |
| Minimum Medullary Concentration | Medical |
| Maximum Mass Concentration | Medical |
| Macro Molecular Complex | Medical |
| Mucosal Mast Cells | Medical |
| mucosal-type mast cells | Medical |
| Mufreesboro Medical Clinic | Medical |
| Medical Marijuana Center | Medical |
| Murfreesboro Medical Clinic | Medical |
| Male Medical Circumcision | Medical |
| Materiel Management Center | Military and Defence |
| Metal Matrix Composite | Military and Defence |
| Mobile Mission Coordinator | Military and Defence |
| Midi Machine Control | Networking |
| Media Master Control | Networking |
| Microsoft Management Console | Networking |
| Moving Micro Cross | Physics Related |
| Ciudad Mante, Mexico | Regional |
| Martin Marietta Corporation | Space Science |
| Mid Motor Controller | Space Science |
| Mission Management Center | Space Science |
| Minimum Monthly Charge | Telecommunication |