| Member of the Architectural Association of America | Academic & Science |
| Medieval Academy of America | Academic & Science |
| Museum of Art and Archaeology | Academic & Science |
| Maximum Availability Architecture | Academic & Science |
| Milo Adventist Academy | Academic & Science |
| Member of The Association of Accounting Technicians | Accounts and Finance |
| Chennai | Airport Code |
| Mid- American Apartment Communities, Inc. | Business |
| Mathematics Association of America | Business |
| Myositis Association Of America | Business |
| MagIndustries Corporation | Business |
| Mortgage Action Alliance | Business |
| Michigan Assessors Association | Community |
| Michigan Archers Association | Community |
| Manual Artwork Alignment | Community |
| MTV Asia Awards | Community |
| Museum Of Animal Accomplishment | Community |
| Modifier, Attributive, Adverb | Community |
| Maastricht Aachen Airport | Community |
| Massachusetts Arborists Association | Community |
| Medical Association of Atlanta | Community |
| Montessori Administrators Association | Community |
| Merton Athletic Association | Community |
| Mobile App Analytics | Computing |
| Message Authentication Algorithm | Computing |
| Mcafee Auto-Update Architect | Computing |
| Monetize Android Applications | Computing |
| Modern Action Adventure | Computing |
| Mcafee All Access | Computing |
| Mothers Absolute Affection | General |
| Mid American Apartments | General |
| Moist Adiabatic Adjustment | General |
| Math Alert Archives | General |
| Mid America Apartments | General |
| Malaysian Automotive Association | General |
| Madness All Around | General |
| Mahindra Automotive Australia | General |
| Motor Agents Association | General |
| Michigan Automotive Academy | General |
| Multiply And Accumulate And | General |
| Mid America Apartment | General |
| Mutual Assurance Administrators | General |
| Maryland Aviation Administration | General |
| Mid America | General |
| Mission Area Assessment | General |
| Missouri Auto Auction | General |
| Maryland Aviation Authority | Governmental |
| Marketing Authorization Application | Governmental |
| Marketing Authorisation Application | Governmental |
| Motor Accidents Authority | Governmental |
| Marvel Avengers Alliance | Governmental |
| MAVAL | Indian Railway Station |
| Medical Administrative Activities | Medical |
| Medical Assistance Assumed | Medical |
| Medical Assistance Administration | Medical |
| Mission Area Analysis | Military and Defence |
| Manufacturers' Agents Association of Great Britain | Regional |
| Chennai/ Madras, India | Regional |
| Magma Arizona Railroad Company | Regional |
| Magma Arizona Railroad | Regional |
| Mathematical Association of America | Space Science |
| Maximum Authorized Altitude | Space Science |
| Mechanical Arm Assembly | Space Science |
| Millard Athletic Association | Sports |
| Martial Arts for Africa | Sports |
| Marist Athletic Association | Sports |
