| Ma. | Mundart 
| Others |
| MA1 | Machine Accountant Petty Officer 1st Class
| Others |
| MA1 | Master-at-arms Petty Officer First Class
| Others |
| MA2 | Machine Accountant Petty Officer 2nd Class
| Others |
| MA2 | Master_at-arms Petty Officer Second Class
| Others |
| MA3 | Harvard Graphics 3.0 Macro
| Others |
| MA3 | Machine Accountant Petty Officer 3rd Class
| Others |
| MA7C | Midlands Austin Seven Club
| Others |
| MAA | Chennai/ Madras, India
| Others |
| MAA | Maastricht Aachen Airport
| Others |
| MAA | Madness All Around
| Others |
| MAA | Magma Arizona Railroad
| Others |
| MAA | Magma Arizona Railroad Company
| Others |
| MAA | Mahindra Automotive Australia
| Others |
| MAA | Malaysian Automotive Association
| Others |
| MAA | Manual Artwork Alignment
| Others |
| MAA | Manufacturers' Agents Association of Great Britain
| Others |
| MAA | Marist Athletic Association
| Others |
| MAA | Marketing Authorisation Application
| Others |
| MAA | Marketing Authorization Application
| Others |
| MAA | Martial Arts For Africa
| Others |
| MAA | Marvel Avengers Alliance
| Others |
| MAA | Maryland Aviation Administration
| Others |
| MAA | Maryland Aviation Authority
| Others |
| MAA | Massachusetts Arborists Association
| Others |
| MAA | Math Alert Archives
| Others |
| MAA | Mathematical Association of America
| Others |
| MAA | Mathematics Association of America
| Others |
| MAA | Maximum Authorized Altitude
| Others |
| MAA | Maximum Availability Architecture
| Others |
| MAA | Mcafee All Access
| Others |
| MAA | Mcafee Auto-Update Architect
| Others |
| MAA | Mechanical Arm Assembly
| Others |
| MAA | Medical Administrative Activities
| Others |
| MAA | Medical Assistance Administration
| Others |
| MAA | Medical Assistance Assumed
| Others |
| MAA | Medical Association of Atlanta
| Others |
| MAA | Medieval Academy of America
| Others |
| MAA | Member of the Architectural Association of America
| Others |
| MAA | Member of the Association of Accounting Technicians
| Others |
| MAA | Merton Athletic Association
| Others |
| MAA | Message Authentication Algorithm
| Others |
| MAA | Michigan Archers Association
| Others |
| MAA | Michigan Assessors Association
| Others |
| MAA | Michigan Automotive Academy
| Others |
| MAA | Mid America
| Others |
| MAA | Mid America Apartment
| Others |
| MAA | Mid America Apartments
| Others |
| MAA | Mid American Apartments
| Others |
| MAA | Millard Athletic Association
| Others |