| Abbreviation | Definition |
|---|---|
| AMBC-555PIA | Airborne Memorial Bridge Chapter 555th Parachute Infantry Association |
| AMBPPCT | Avatar Meher Baba Perpetual Public Charitable Trust |
| AMBS | Academy of the Most Blessed Sacrament |
| AMC | American MENSA Committee |
| AMCCRC | American Medical Center Cancer Research Center |
| AMDA | Acid Maltase Deficiency Association |
| AMDAI | Age-related Macular Degeneration Alliance International |
| AME | Academy of Management Executives |
| AMEND | Aiding Mothers and Fathers Experiencing Neonatal Death |
| AMEND | Association for Multiple Endocrine Neoplasia Disorders |
| AMF | Airmen Memorial Foundation |
| AMF | Astronauts Memorial Foundation |
| AMFAR | AMerican Foundation for AIDS Research |
| AMFCSE | Astronauts Memorial Foundation Center for Space Education |
| AMFOR | American Forests |
| AMHA | Association for Mental Health Alternatives |
| AMI | Associated Marine Institutes |
| AMIA | American Medical Informatics Association |
| AMIC | Alabama Municipal Insurance Corporation |
| AMM | AIDS, Medicine, and Miracles |