| Abbreviation | Definition |
|---|---|
| MAC | Association Minralogique du Canada |
| MAC | Mineralogical Association of Canada |
| MAC | Mining Association of Canada |
| MACPS | Mid Atlantic Carnivorous Plant Society |
| MADS | Macclesfield Amateur Dramatic Society |
| MADS | Music Art and Drama Society |
| MAES | Society of Mexican American Engineers and Scientists |
| MAGS | Metropolitan Area Geriatrics Society |
| MAHS | Madison Area Herpetological Society |
| MAHS | Maine Aviation Historical Society |
| MAHS | Maritime Archaeological and Historical Society |
| MAHS | Michigan Audio Heritage Society |
| MAHS | Midwest Art History Society |
| MAHS | Minnesota Association of Honor Societies |
| MAJ | Medical Association of Jamaica |
| MAKIT | Hungarian Society of Allergology and Clinical Immunology |
| MAKIT | Magyar Allergolgiai s Klinikai Immunolgiai Trsasg |
| MAKIT | Magyar Allergológiai és Klinikai Immunológiai Társaság |
| MAKL | ????????????? ?????????? ?????????????? ??????????? |
| MAKL | 564C=0@>4=0O AA>F80F8O 20=B8B0B82=>9 8=328AB8:8 |