| Abbreviations | Meaning |
 | ASPEA / ASPEE / SKJP | Association Suisse De Psychologie De L'Enfance Et De L'Adolescence / Associazione Svizzera Di Psicologia Dell'Età Evolutiva / Schweizerische Vereinigung Für Kinder- Und Jugendpsychologie |
 | ASPEDAH | Association Suisse Romande De Parents D'Enfants Avec Déficit D'Attention Avec Ou Sans Hyperactivité |
 | ASPEE / ASPEA / SKJP | Associazione Svizzera Di Psicologia Dell'Età Evolutiva / Association Suisse De Psychologie De L'Enfance Et De L'Adolescence / Schweizerische Vereinigung Für Kinder- Und Jugendpsychologie |
 | ASPEN | American Society For Parenteral And Enteral Nutrition |
 | ASPEN | Asperger Syndrome Education Network |
 | ASPEPS | Association Pour Le Perfectionnement Des Professions De Santé |
 | ASPET | American Society For Pharmacology And Experimental Therapeutics |
 | ASPH | Association De Soutien Aux Personnes Handicapées |
 | ASPH | Association Of Schools Of Public Health |
 | ASPHER | Association Of Schools Of Public Health In The European Region |
 | ASPHO | American Society Of Pediatric Hematology/Oncology |
 | ASPI | Alliance Of State Pain Initiatives [Previously: American Alliance Of Cancer Pain Initiatives] |
 | ASPMN | American Society Of Pain Management Nurses |
 | ASPN | American Society Of Pediatric Nephrology |
 | ASPN | American Society Of Pediatric Neurosurgeons |
 | ASPNR | American Society Of Pediatric Neuroradiologoy |
 | ASPO | American Society Of Pediatric Otolaryngology |
 | ASPO | American Society Of Preventive Oncology |
 | ASPP | American Society Of Psychoanalytic Physicians |
 | ASPPO | Sociedad Peruana De Psicoprofilaxis Obstétrica. Peruvian Society Of Obstetrical Psicoprofilaxis |
 | ASPQ | Association Pour La Santé Publique Du Québec |
 | ASPR | Association Of Staff Physician Recruiters |
 | ASPR | The Australasian Society For Psychiatric Research |
 | ASPS | American Society Of Plastic Surgeons |
 | ASPS | Australian Society Of Plastic Surgeons |
 | ASPSN | American Society Of Plastic Surgical Nurses |
 | ASRA | American Society Of Regional Anesthesia And Pain Medicine |
 | ASRI | American Society For Reproductive Immunology |
 | ASRM | Alberta Section Of Rural Medicine |
 | ASRM | American Society For Reproductive Medicine |
 | ASRS | American Society Of Retina Specialists |
 | ASRS | Asian Sleep Research Society |
 | ASRS | Association Of Students Of The Radiologic Sciences |
 | ASRT | American Society Of Radiologic Technologists |
 | ASSA | Alabama State Society Of Anesthesiologists |
 | ASSCID | Australian Society Of Special Care In Dentistry |
 | ASSEDEA | Association D'Étude Et D'Aide Aux Enfants Amputés |
 | ASSERT | A Standard For The Scientific And Ethical Review Of Trials |
 | ASSH | American Society For Surgery Of The Hand |
 | ASSH | Australian Society For Simulation In Healthcare |
 | ASSIPHAR | Association Nationale Des Assistants Et Anciens Assistants En Pharmacie Hospitalière |
 | ASSO / ACO | Austrian Society Of Surgical Oncology / Arbeitsgemeinschaft Für Chirurgische Onkologie Der Österreichischen Gesellschaft Für Chirurgie |
 | ASSR | American Society Of Spine Radiology |
 | AST | Alsace Santé Au Travail |
 | AST | American Society Of Transplantation |
 | AST | Association Of Surgical Technologists |
 | ASTA | Australasian Sleep Technologists Association |
 | ASTB | Association Sclérose Tubéreuse De Bourneville |
 | ASTDA | American Sexually Transmitted Diseases Association |
 | ASTDD | Association Of State And Territorial Dental Directors |