| MACED | Michigan Association for Children with Emotional Disorders 
| Others |
| MACED | Mountain Association for Community Economic
| Others |
| MACED | Mountain Association For Community Economic Development
| Others |
| MACEL | Mysore Amalgamated Coffee Estates
| Others |
| MACEO | Michigan Association of Code Enforcement Officers
| Others |
| MACEP | Massachusetts Association of Clinical Exercise Physiologist
| Others |
| MACEP | Massachusetts College of Emergency Physicians
| Others |
| MACER | Ministerial Advisory Committee for Educational Renewal
| Others |
| MACET | Maharaja Agrasen College of Engineering and Technology
| Others |
| MACET | Maulana Azad College of Engineering and Technology
| Others |
| MACF | Mandatory Access Control Framework
| Others |
| MACF | Masters of Arts in Conflict Facilitation
| Others |
| MACF | Multiple Association Control Facility
| Others |
| MACF | Multiple Association Control Function
| Others |
| MACFAST | Mar Athanasios College For Advanced Studies Tiruvalla
| Others |
| MACFOC | Masters of Arts in Conflict Facilitation and Organizational Change
| Others |
| MACG | Marine Air Control Group
| Others |
| MACG | Marshaling Area Control Group
| Others |
| MACG | Metro Alliance for the Common Good
| Others |
| MACG | Mid Atlantic Capital Group
| Others |
| MACH | Martin Army Community Hospital
| Others |
| MACH | Master Agility Champion
| Others |
| MACH | Maximum Average Correlation Height
| Others |
| MACH | Metal Alternative Crossover Hiphop
| Others |
| MACH | Microkernel Architectures Considered Harmful
| Others |
| MACH | Microsoft Academy for College Hires
| Others |
| MACH | Military Advanced Combat Helmet
| Others |
| MACH | Military Air Command Hunter
| Others |
| MACH | Millenium, Athens, Covert, Harquahala
| Others |
| MACH | Modelo Acoplado de Coordinacion Hidrotermica
| Others |
| MACH | Motion Accelerating Hyper-Pixel
| Others |
| MACH | Multi Layer Actuator Head
| Others |
| MACH | Multifaced Asymmetrical Configuration Hyper-Pixel
| Others |
| MACH | Multiple Advanced Computers for Hypersonics
| Others |
| MACH | Velocity Relative to the Speed of Sound
| Others |
| MACH1 | Machinist 1st Class Petty Officer
| Others |
| MACH2 | Machinist 2nd Class Petty Officer
| Others |
| MACH3 | Machinist 3rd Class Petty Officer
| Others |
| MacHack | Macintosh Hackers Conference
| Others |
| MACHI | Maya Area Cultural Heritage Initiative
| Others |
| MACHO | Males Acting Childishly Horrible And Obnoxious
| Others |
| MACHO | Maryland Association of County Health Officers
| Others |
| MACHO | Massive Astronomical Compact Halo Object
| Others |
| MACHO | Massive Astrophysical Compact Halo Object
| Others |
| MACHS | Missouri Automated Criminal History Site
| Others |
| MACHS | Missouri Automated Criminal History System
| Others |
| MACHUMI | A ndebele clan with zulu origins
| Others |
| MACHVI | International Workshop on Industrial Applications of MACHine Vision & MACHine Intelligence
| Others |
| MACI | Mandel Atletiek Club Izegem
| Others |
| MACI | Maori Arts and Crafts Institute
| Others |