| Acronym | Definition |
|---|
| MA | Massachusetts (US postal abbreviation) |
| MA | Master of Arts (degree) |
| MA | Mature Audiences (TV program rating) |
| ma | Milliampere |
| MA | Mildly Amused |
| MA | Master |
| MA | Materials |
| MA | Maintenance |
| MA | Manual (welding) |
| MA | Morocco (ISO country code, top level domain) |
| MA | Madagascar (Malagasy) |
| MA | Mathematics |
| MA | Manitoba |
| MA | Methamphetamine |
| MA | Meta Analysis |
| MA | Maranhão (Brazilian state) |
| MA | Maranhao (Brazil) |
| MA | Mannheim, Germany (license plate) |
| MA | Moving Average |
| Ma | Million Years (geology) |
| MA | Military Academy (West Point, NY) |
| MA | Microsoft Access |
| MA | Medicare Advantage |
| MA | Medical Assistance |
| MA | Mission Accomplished |
| MA | Medical Assistant |
| MA | Mittelalter (German: Middle Ages) |
| MA | Move Along |
| MA | Maleic Anhydride |
| MA | Mobile Service |
| MA | Multiple Access |
| MA | Management Accounting |
| MA | Martial Artist (gaming, Anarchy Online) |
| MA | Morbid Angel (band) |
| MA | Maanantai (Finnish: Monday) |
| MA | Martial Artist (gaming) |
| MA | Military Applications |
| MA | Management Analyst |
| MA | Martha Argerich (pianist) |
| MA | Marijuana Anonymous |
| MA | Measurement and Analysis (process area; Capability Maturity Model Integration) |
| MA | Management Agent (metadirectory services) |
| MA | Market America (independent entrepenurial corporation founded by James H Ridinger) |
| MA | Multi-Access |
| MA | Multiple Award |
| MA | Maintenance Agreement |
| MA | Maritime Administration |
| MA | Management Accounts |
| MA | Management Activity |
| MA | Multimedia Authoring |
| MA | Medical Advisor |
| MA | Metropolitan Area Network |
| MA | Magister Artium (Master of Arts) |
| MA | Marketing Authorization |
| MA | Mission Area |
| MA | Map Analysis |
| MA | Mean Average (mathematics) |
| MA | Mechanical Animals (Marilyn Manson album) |
| MA | Mental Age |
| MA | Mobile Armor (Gundam series) |
| MA | Mechanical Advantage (machines) |
| MA | Mission Assurance (Homeland Defense) |
| MA | Modified Atmosphere |
| MA | Modern Apprenticeship |
| MA | Mandelic Acid |
| MA | Monitoring Agency |
| MA | Marin Academy (California) |
| MA | Major Arcana (Lineage 2 game armor set) |
| MA | Missed Abortion |
| MA | Mission Analysis |
| MA | Molecular Absorption |
| MA | Medical Attendant |
| MA | Microaneurysm (ophthalmology) |
| MA | Military Assistant |
| MA | Mass Analyzer |
| MA | Mission Assignment |
| MA | Maintenance Action |
| MA | Mortuary Affairs |
| MA | Motorcycling Australia |
| MA | Minnehaha Academy (Minneapolis) |
| MA | Minor Actinide |
| MA | Missed Approach |
| MA | Mobility Agent |
| MA | Message Analysis |
| MA | Missed Appointment |
| MA | Moored Alongside |
| MA | Margin Agreement |
| MA | Maximum Allowance |
| MA | Main Assist (Everquest) |
| MA | Multiple Answer |
| MA | Music Ant (online guide for music software) |
| MA | Medical Administrator |
| MA | Master Administrator |
| MA | Maître Ès Arts (French: Master of Arts) |
| MA | Minor Arterial (State highway Information) |
| MA | Middle Assyrian |
| MA | Maintenance Administrator |
| MA | Magnetic Amplifier |
| Ma | Mega Annum (one million years, geological chronology) |
| MA | Makarska, Croatia (license plate) |
| MA | Methanandamide |
| MA | Masurium (element) |
| MA | Mission Abort |
| MA | Marshalling Area |
| MA | Materials Analyst |
| MA | Maintaining Activity |
| MA | Maintainability Analysis |
| MA | Maintenance and Adaptation (ATMF) |
| MA | Mobile Allocation (PCS - GSM) |
| MA | Mobilization Assistant |
| MA | Military Aircrew |
| MA | Management Advocate |
| MA | Mesh Antenna |
| MA | Manual Assist (nursing) |
| MA | Manufacturing Approval |
| MA | Memory Administration |
| MA | Motorist Assist |
| MA | MatureAsskickers (gaming clan) |
| MA | Machine Accountant (Naval Rating) |
| MA | Mini Alert (System Sensor Sounder) |
| MA | Master of Audiology |
| MA | Mechanical Ambush |
| MA | Multi-Alert (system sensor brand name) |
| MA | MediArchive (website) |
| MA | Magical Alliance (gaming group) |
| MA | MJU Alert (Hekimian) |
| MA | Willys-Overland 1/4 Ton 4 X 4 Truck (1st Model of WWII Jeep) |
| MA | Malev Hungarian Airlines Limited - Hungary (IATA airline code) |
| MA | Makeshift Apathy (Michigan band)) |
| MA | MANPRINT Assessment |
| MA | Multichambered Autoinjector |
| MA | (USN Rating) Master-At-Arms |
| MA | Miscible Accounting |