Medical Organizations
- American Academy of Micropigmentation (AAM)
- American Academy of Neurological and Orthopaedic Surgeons (AANOS)
- American Academy of Neurology (AAN)
- American Academy of Nurse Practitioners Certification (AANPC)
- American Academy of Nurse Practitioners Certification Board (AANPCB)
- American Academy of Nurse Practitioners Certification Program (AANPCP)
- American Academy of Nursing (AAN)
- American Academy of Ophthalmology (AAO)
- American Academy of Ophthalmology and Otolaryngology (AAOO)
- American Academy of Optometry (AAOPT)
- American Academy of Oral and Maxillofacial Pathology (AAOMP)
- American Academy of Oral and Maxillofacial Radiology (AAOMR)
- American Academy of Orthopaedic Manual Physical Therapists (AAOMPT)
- American Academy of Orthopaedic Surgeons (AAOS)
- American Academy of Orthotists and Prosthetists (AAOP)
- American Academy of Osteopathy (AAO)
- American Academy of Otolaryngic Allergy (AAOA)
- American Academy of Otolaryngology, Head and Neck Surgery (AAOHNS)
- American Academy of Ozonotherapy (AAO)
- American Academy of Pain Medicine (AAPM)
- American Academy of Pediatric Dentistry (AAPD)
- American Academy of Pediatric Neuropsychology (AAPN)
- American Academy of Pediatrics (AAP)
- American Academy of Pediatrics, Committee on Accident and Poison Prevention (AAP-CAPP)
- American Academy of Periodontology (AAP)
- American Academy of Physical Medicine and Rehabilitation (AAPM&R)
- American Academy of Physical Therapy (AAPT)
- American Academy of Physician Assistants (AAPA)
- American Academy of Podiatric Practice Management (AAPPM)
- American Academy of Podiatric Sports Medicine (AAPSM)
- American Academy of Private Physicians (AAPP)
- American Academy of Professional Coders (AAPC)
- American Academy of Psychiatry and the Law (AAPL)
- American Academy of Psychotherapists (AAP)
- American Academy of Sleep Medicine (AASM)
- American Academy of the History of Dentistry (AAHD)
- American Academy of Tuberculosis Physicians (AATP)
- American Academy of Urgent Care Medicine (AAUCM)
- American Alternative Medical Association (AAMA)
- American Anthropological Association (AAA)
- American Art Therapy Association (AATA)
- American Association for Accreditation of Ambulatory Surgery Facilities (AAAASF)
- American Association for Accreditation of Laboratory Animal Care (AAALAC)
- American Association for Cancer Research (AACR)
- American Association for Comprehensive Health Planning (AACHP)
- American Association for Dental, Oral, and Craniofacial Research (AADOCR)
- American Association for Laboratory Animal Science (AALAS)
- American Association for Marriage and Family Therapy (AAMFT)
- American Association for Pediatric Ophthalmology and Strabismus (AAPOS)
- American Association for Physician Leadership (AAPL)
- American Association for Rehabilitation Therapists (AART)
- American Association for Respiratory Care (AARC)
- American Association for Social Psychiatry (AASP)
- American Association for the Advancement of Science (AAAS)
- American Association for the History of Medicine (AAHM)
- American Association for the Study of Liver Diseases (AASLD)
- American Association for the Surgery of Trauma (AAST)
- American Association for Thoracic Surgery (AATS)
- American Association for Women Radiologists (AAWR)
- American Association of Allied Health Professionals (AAAHP)
- American Association of Anatomists (AAA)
- American Association of Applied Psychology (AAAP)
- American Association of Ayurvedic Professionals (AAAP)
- American Association of Bioanalysts (AAB)
- American Association of Blood Banks (AABB)
- American Association of Christian Counselors (AACC)
- American Association of Cleft Palate Rehabilitation (AACPR)
- American Association of Clinical Anatomists (AACA)
- American Association of Clinical Chemists (AACC)
- American Association of Clinical Endocrinologists (AACE)
- American Association of Clinical Urologists (AACU)
- American Association of Colleges of Nursing (AACN)
- American Association of Colleges of Osteopathic Medicine (AACOM)
- American Association of Colleges of Pharmacy (AACP)
- American Association of Community Psychiatrists (AACP)
- American Association of Critical-Care Nurses (AACN)
- American Association of Critical-Care Nurse Specialists (AACCNS)
- American Association of Directors of Psychiatric Residency Training (AADPRT)
- American Association of Drugless Practitioners (AADP)
- American Association of Electrodiagnostic Technologists (AAET)
- American Association of Endodontists (AAE)
- American Association of Foundations for Medical Care (AAFMC)
- American Association of Genito-Urinary Surgery (AAGUS)
- American Association of Gynecological Laparoscopists (AAGL)
- American Association of Gynecologic Laparoscopists (AAGL)
- American Association of Heart Failure Nurses (AAHFN)
- American Association of Hospital Planning (AAHP)
- American Association of Immunologists (AAI)
- American Association of Implant Dentistry (AAID)
- American Association of Inhalation Therapists (AAIT)
- American Association of Integrative Medicine (AAIM)
- American Association of Legal Nurse Consultants (AALNC)
- American Association of Medical Assistants (AAMA)
- American Association of Medical Milk Commissions (AAMMC)
- American Association of Medical Review Officers (AAMRO)
- American Association of Naturopathic Physicians (AANP)
- American Association of Neurological Surgeons (AANS)
- American Association of Neuromuscular and Electrodiagnostic Medicine (AANEM)
- American Association of Neuropathologists (AAN)
- American Association of Neuroscience Nurses (AANN)