3GPP: 3rd Generation Partnership Project
3GPP2: 3rd Generation Partnership Project 2
A2LA: American Association for Laboratory Accreditation
AA: Academy of Aphasia
AA: Aluminium Association
AA: Alzheimer's Association
AAA: Age Anaesthesia Association
AAA: American Academy of Audiology
AAA: American Allergy Association
AAA: American Anthropological Association
AAA: American Arbitration Association
AAA: American Association of Anatomists
AAA: Aviation Academy Austria
AAAA: American Academy of Anesthesiologist Assistants
AAAAI: American Academy of Allergy, Asthma and Immunology
AAAASF: American Association for Accreditation of Ambulatory Surgery Facilities
AAABEM: American Association of Acupuncture and Bio-Energetic Medicine
AAAC: American Academy of Ambulatory Care
AAACN: American Academy of Ambulatory Care Nursing
AAAD: American Athletic Association of the Deaf
AAAD: Asian Academy of Aesthetic Dentistry
AAAH: American Association of Alternative Healers
AAAHC: Accreditation Association for Ambulatory Health Care
AAAI: American Association for Artificial Intelligence
AAALAC: Association for Assessment and Accreditation of Laboratory Animal Care International
AAALF: American Association for Active Lifestyles and Fitness
AAAM: Association for the Advancement of Automotive Medicine
AAANA: American Academy of Ambulatory Nursing Administration
AAAOM: American Academy of Acupuncture and Oriental Medicine
AAAP: American Academy of Addiction Psychiatry
AAAS: American Association for the Advancement of Science
AAAST: African Association for the Advancement of Science and Technology
AABA: American Anorexia Bulimia Association
AABB: American Association of Blood Banks
AABH: Association for Ambulatory Behavioral Healthcare
AABIC: Association for the Advancement of Brain Injured Children
AABP: American Academy of Behavioral Psychology
AABP: American Association of Bovine Practitioners
AABSS: American Association of Behavioral and Social Sciences
AACA: Army Air Corps Association