| M.Ac | Master of Acupuncture 
| Others |
| MAC | Apple Macintosh Black & White MacPaint file Bitmap graphics
| Others |
| MAC | MAC Address Collector
| Others |
| MAC | Mac Apple Corps
| Others |
| MAC | Macadam
| Others |
| MAC | MACarca
| Others |
| MAC | Macaroni and Cheese
| Others |
| MAC | Macau Autosports Club
| Others |
| MAC | MacDonald
| Others |
| MAC | Macedonian
| Others |
| MAC | Macerated
| Others |
| MAC | Machine Access Code
| Others |
| MAC | Machine Accountant Chief Petty Officer
| Others |
| MAC | Machine Address Code
| Others |
| MAC | Machine Aided Cognition
| Others |
| MAC | Machine Always Crashes
| Others |
| Mac | Macintosh
| Others |
| MAC | Macintosh (computer)
| Others |
| MAC | Macintosh All Caps
| Others |
| MAC | Mackenzie a character
| Others |
| MAC | Macro
| Others |
| MAC | Macro Analysis Computer
| Others |
| MAC | Macs Are Crap
| Others |
| MAC | macula
| Others |
| MAC | Mad And Crazy
| Others |
| MAC | Magnitude Amplification Cavity
| Others |
| MAC | Mahindra Adventure Challenge
| Others |
| MAC | Main Assistance Console
| Others |
| MAC | Mainland Affairs Council
| Others |
| MAC | Maintaining Active Citizens
| Others |
| MAC | Maintenance Advisory Committee
| Others |
| MAC | Maintenance Allocation Chart
| Others |
| MAC | Major Ambulatory Category
| Others |
| MAC | Make A Change
| Others |
| MAC | Make Activities Count
| Others |
| MAC | Makeup Art and Cosmetics
| Others |
| MAC | Makeup Art Cosmetics
| Others |
| MAC | Makeup Artist Cosmetics
| Others |
| MAC | Makeup, Art, and Cosmetics
| Others |
| MAC | Makeup, Art, Cosmetics
| Others |
| MAC | Making A Change
| Others |
| MAC | Making Activities Count
| Others |
| MAC | Mammalian Artificial Chromosome
| Others |
| MAC | Man And Computer
| Others |
| MAC | Management Adhoc Committee
| Others |
| MAC | Management and Administrative Computing
| Others |
| MAC | Managerial Assistance Control
| Others |
| MAC | Mandatory Access Control
| Others |
| MAC | Maneuver Area Command
| Others |
| MAC | Manga Anime Cartoon
| Others |
| MAC | Manhattan Association of Cabarets
| Others |
| MAC | Manifest Analysis And Certification
| Others |
| MAC | Manual Air Conditioning
| Others |
| MAC | Many Assorted Costumes
| Others |
| MAC | Marathwada Auto Cluster
| Others |
| MAC | Marine Archaeology Centre
| Others |
| MAC | Marker And Cell
| Others |
| MAC | Market Access & Compliance
| Others |
| MAC | Market Access and Compliance
| Others |
| MAC | Marketing Advertising And Communication
| Others |
| MAC | Marshall Always Champion
| Others |
| MAC | Marshall And Challengers
| Others |
| MAC | Marshall Athletic Conference
| Others |
| MAC | Master-at-arms Chief Petty Officer
| Others |
| MAC | Masters Arent Competing
| Others |
| MAC | Masters of Acupuncture
| Others |
| MAC | Mathematics Access Centre
| Others |
| MAC | Mathematics And Computation
| Others |
| MAC | Mathworks Automotive Conference
| Others |
| MAC | Maximum Acceptable Concentration
| Others |
| MAC | Maximum Aerobic Capacity
| Others |
| MAC | Maximum Allowable Charge
| Others |
| MAC | Maximum Allowable Concentration
| Others |
| MAC | Maximum Concentration of Organics
| Others |
| MAC | McKinney Avenue Contemporary
| Others |
| MAC | Mean Aerodynamic Chord
| Others |
| MAC | Measured Attenuation Correction
| Others |
| MAC | Media Access Control
| Others |
| MAC | Media Access Controller
| Others |
| MAC | Media Action Committee
| Others |
| MAC | Medical Advisory Committee
| Others |
| MAC | Medicare Administrative
| Others |
| MAC | Medicare Administrative Contractor
| Others |
| MAC | Medicare Appeals Council
| Others |
| MAC | Medication Access Computer
| Others |
| MAC | Medium Access Control
| Others |
| MAC | Medium Access Controller
| Others |
| MAC | Membership Advisory Committee
| Others |
| MAC | Membrane Attack Complex
| Others |
| MAC | Memory Access Control
| Others |
| MAC | Men Against Communism
| Others |
| MAC | Menasha Action Council
| Others |
| MAC | Mental Adjustment to Cancer scale
| Others |
| MAC | Message Authentication Code
| Others |
| MAC | Metal Alloy Colleague
| Others |
| MAC | Metered Automatic Cartridge
| Others |
| MAC | MEVA Automatic Climbing
| Others |
| MAC | Mexican American Council
| Others |
| MAC | Michigan Agricultural College
| Others |
| MAC | Microsoft Approved Course
| Others |
| MAC | Mid America Conference
| Others |
| MAC | Mid American Conference
| Others |
| MAC | Mid Atlantic Crossing
| Others |
| MAC | Mid-American Conference
| Others |
| MAC | Mid-Atlantic Cape
| Others |
| MAC | Mid-Atlantic Cyclone
| Others |
| MAC | Midair Attitude Correction
| Others |
| MAC | Middle Aged Cops
| Others |
| MAC | Middle Aged Crazy
| Others |
| MAC | Middle Area Conference
| Others |
| MAC | Middle Atlantic Conference
| Others |
| MAC | Midland Automobile Club
| Others |
| MAC | Midwest Athletic Conference
| Others |
| MAC | Migration Advisory Committee
| Others |
| MAC | Milano Autoclassica
| Others |
| MAC | Military Advisory Council
| Others |
| MAC | Military Airlift Command
| Others |
| MAC | Military Airlift Command (Now Air Mobility Command)
| Others |
| MAC | Military Armament Company
| Others |
| MAC | Military Armament Corporation
| Others |
| MAC | Military Armistice Commission
| Others |
| MAC | Military Assistance Command
| Others |
| MAC | Mill Auto Conversions
| Others |
| MAC | Millmerran Auto Club
| Others |
| MAC | Minimum Alveolar Concentration
| Others |
| MAC | Minimum Antibiotic Concentration
| Others |
| MAC | Ministerial Advisory Committee
| Others |
| MAC | Ministries Agencies and Commissions
| Others |
| MAC | Minnesota Autosports Club
| Others |
| MAC | Minority Achievement Committee
| Others |
| MAC | Minority Affairs Committee
| Others |
| MAC | Mission Assurance Category
| Others |
| MAC | Missions Across Canada
| Others |
| MAC | Missions Adventure Camp
| Others |
| MAC | Mississippi Access to Care
| Others |
| MAC | Missoula Aquatic Club
| Others |
| MAC | Mitral Annular Calcification
| Others |
| MAC | Mitsubishi Adventure Club
| Others |
| MAC | Mobile Air Conditioning
| Others |
| MAC | Mobile Analytical Chemical
| Others |
| MAC | Mobis Automotive Czech
| Others |
| MAC | Model A Club
| Others |
| MAC | Money Access Center
| Others |
| MAC | Mongolian Auto Club
| Others |
| MAC | Monitored Anaesthesia Care
| Others |
| MAC | Monitored Anesthesia Care
| Others |
| MAC | Montreal Audi Club
| Others |
| MAC | Morning and Afternoon Care
| Others |
| MAC | Moron-Accessible Computer
| Others |
| MAC | Mortuary Affairs Center
| Others |
| MAC | Most Amazing Computer
| Others |
| MAC | Most Awesome Computer
| Others |
| MAC | Motor Cu Aprindere Prin Compresie
| Others |
| MAC | Motorist Assistance Center
| Others |
| MAC | Motorola Advanced Computer
| Others |
| MAC | Mouse Activated Computer
| Others |
| MAC | Move, Add, or Change
| Others |
| MAC | Moves Adds and Changes
| Others |
| MAC | Moves, Adds, and Changes
| Others |
| MAC | Mr Andy Carpenter
| Others |
| MAC | Mr. Andy Carpenter
| Others |
| MAC | Mtime, Atime, Ctime
| Others |
| MAC | Multi Access Computer
| Others |
| MAC | Multi Activity Car
| Others |
| MAC | Multi Actors Cooperation
| Others |
| MAC | Multi Agency Complex
| Others |
| MAC | Multi-Access Computer
| Others |
| MAC | Multi-Action Conditioner
| Others |
| MAC | Multi-Agency Centre
| Intelligence Agency |
| MAC | Multifunctional Automobile Communication System
| Others |
| MAC | Multimedia Affective Computing
| Others |
| MAC | Multiple Advanced Computers
| Others |
| MAC | Multiple Analogue Component
| Others |
| MAC | Multiple Architecture Computer
| Others |
| MAC | Multiplexed Analog Components
| Others |
| MAC | Multiplexed Analogue Components
| Others |
| MAC | Multiply Accumulate
| Others |
| MAC | Multiply-Accumulate
| Others |
| MAC | Multnomah Athletic Club
| Others |
| MAC | Muslim Association of Canada
| Others |
| MAC | Mycobacterium Avium Complex
| Others |
| MAC | Mycrobaterium Avian Complex
| Others |