| Acronym | Definition |
|---|
| AA➣Alcoholics Anonymous |
| AA➣Battery Size |
| AA➣Associate in Arts (degree) |
| AA➣American Airlines |
| AA➣Anti-Aircraft |
| AA➣USDA Grade for Dairy Products and Eggs |
| AA➣Alcohol Abuse |
| AA➣Automobile Association (England) |
| AA➣Ana (Greek: the same amount each) |
| AA➣American Association (AAA baseball league) |
| AA➣African-American |
| AA➣As Above |
| AA➣Architectural Association (London, England) |
| AA➣Athletic Association |
| AA➣Advertising Agency |
| AA➣Asian American |
| AA➣Bra Size |
| AA➣Affirmative Action |
| AA➣Administrative Assistant |
| AA➣Aruba |
| AA➣All-American |
| AA➣Amino Acid |
| AA➣Atomic Absorption |
| AA➣Ann Arbor (Michigan) |
| AA➣Action-Adventure (movie genre) |
| AA➣Appropriate Action |
| AA➣Alto Adige (Italian region) |
| AA➣Armed Forces Americas |
| AA➣Air-to-Air |
| AA➣Academy Award(s) |
| AA➣Alumni Association |
| AA➣Addicts Anonymous |
| AA➣All Aboard (IBM model railroad interface) |
| AA➣Affected Area |
| AA➣Aero Asahi (Japan) |
| AA➣Anti-Aliasing |
| AA➣Asking Alexandria (band) |
| AA➣Acrylic Acid |
| AA➣Ace Attorney (video game) |
| AA➣Aggravated Assault |
| AA➣Anaheim Angels (major league baseball team) |
| AA➣Asset Allocation |
| AA➣Alopecia Areata |
| AA➣Anne Arundel (Maryland county) |
| AA➣Air Ambulance |
| AA➣Allergic Asthma |
| AA➣Air Assault |
| AA➣Acetic Acid |
| AA➣Aplastic Anemia |
| AA➣Alzheimer's Association |
| AA➣American Anthropologist (organization/newsletter) |
| AA➣Attendance Allowance (UK housing subsidy) |
| AA➣Austrian Airlines |
| AA➣Acute Appendicitis |
| AA➣Alaska-Anchorage (University of Alaska Anchorage) |
| AA➣Arachidonic Acid |
| AA➣American Anthropology (scientific group) |
| AA➣Auto Assault |
| AA➣Attitude Adjustment (Alcoholics Anonymous) |
| AA➣Architecture d'Aujourd'hui (French: Architecture Today; magazine) |
| AA➣Acronym Attic |
| AA➣Arthur Andersen (consulting firm) |
| AA➣Adjustment Assistance |
| AA➣Administrative Agency (various organizations) |
| AA➣Adverse Action |
| AA➣American Aviation |
| AA➣Associate Administrator |
| AA➣Assistant Administrator |
| AA➣Australian Army |
| AA➣Alleged Assault |
| AA➣Alcoa Aluminum (stock symbol) |
| AA➣Auswärtiges Amt (Exterior Office) |
| AA➣Ansel Adams (photographer) |
| AA➣All After |
| AA➣America's Army (US Army computer game) |
| AA➣Airborne Alert |
| AA➣Anaplastic Astrocytoma (brain tumor) |
| AA➣Active Army |
| AA➣Aviation Archive (publication) |
| AA➣Army Ants |
| AA➣Actinobacillus Actinomycetemcomitans (bacteria) |
| AA➣Axis & Allies (game) |
| AA➣Anonymous Access (3GPP) |
| AA➣Aldosterone Antagonist |
| AA➣Adult Adoptee (adoptions) |
| AA➣Access Authorization |
| AA➣Advertising Association |
| AA➣American Antiquity (publication) |
| AA➣Analysis and Applications (mathematics) |
| AA➣Alternate Assessment |
| AA➣Albuquerque Academy (New Mexico) |
| AA➣Alternate Advancement (EverQuest gaming) |
| AA➣Angle of Attack |
| AA➣Abdominal Aorta |
| AA➣Amon Amarth (band) |
| AA➣Aluminum Association |
| AA➣All Advantage |
| AA➣Authoritative Answer (DNS) |
| AA➣Appropriate Authority |
| AA➣Appointing Authority |
| AA➣Alveolar-Arterial |
| AA➣Air Army |
| AA➣alcohol-preferring |
| AA➣Ao Ano (Per Year; Brazil) |
| AA➣Accumulated Amortization (accounting) |
| AA➣Administrative Assistance (Congress) |
| AA➣Advanced Alloy |
| AA➣Angels & Airwaves (band) |
| AA➣Animal Aid |
| AA➣Agent Agreement |
| AA➣Acetic Anhydride |
| AA➣Algorithmic Architecture |
| AA➣Asian-African |
| AA➣Administrative Authority |
| AA➣Action Aid (UK) |
| AA➣Automated Attendant |
| AA➣Advanced Airway |
| AA➣Attack Attack! (band) |
| AA➣Anxiety Attack |
| AA➣Assembly Area |
| AA➣Air Attache |
| AA➣Audio Adrenaline (band) |
| AA➣Arithmetic Average |
| AA➣Acts of the Apostles (bible) |
| AA➣Air Armament |
| AA➣Airman Apprentice (USN paygrade E-2) |
| AA➣Auto Aim (gaming) |
| AA➣Anonyma Alkoholister (Sweden) |
| AA➣Anti-Armor (US DoD) |
| AA➣Advancement Act of 1995 |
| AA➣Aircraft Availability (global performance indicator) |
| AA➣AUSCERT Advisory (Australian Computer Emergency Response Team) |
| AA➣Agent Aika (anime character) |
| AA➣Affordability Assessment |
| AA➣Alzheimer's Australia |
| AA➣Advanced Academy |
| AA➣Affordability Analysis |
| AA➣Activation Analysis |
| AA➣Aerolineas Argentina |
| AA➣Air Advisor |
| AA➣Ad Acta |
| AA➣Ansett Airways (Australia) |
| AA➣Analysis of Alternatives |
| AA➣Approving Authority |
| AA➣Arnold Arboretum (Harvard University) |
| AA➣Arn Anderson (pro wrestler) |
| AA➣Acute Abdomen |
| AA➣Anders And |
| AA➣Associative Arrays (PERL programming) |
| AA➣Administrative Associate |
| AA➣Avenue of Approach |
| AA➣Anonyme Alkoholikere (Alcoholics Anonymous) |
| AA➣Ahavath Achim (Synagogue) |
| AA➣Activity Area |
| AA➣Andrei Arshavin (Russian soccer player) |
| AA➣Account Administrator |
| AA➣Andecha Astur (Asturian Nationalist Party) |
| AA➣Airfield Assault |
| AA➣Acquisition Activities |
| AA➣Aromatic Amine (chemical for industrial crop production) |
| AA➣Assistance Administration |
| AA➣Active Application |
| AA➣Application Activity |
| AA➣Administering Agency (DOL) |
| AA➣Aku Ankka (Finnish: Donald Duck) |
| AA➣Aberdeen Area (Maryland) |
| AA➣Athletics Australia |
| AA➣Average Audience |
| AA➣Attainment Area (EPA) |
| AA➣Atlanto-Axial (joint) |
| AA➣Anadolu Ajansi (Turkish News Agency) |
| AA➣Attack Assessment |
| AA➣Automatic Answer |
| AA➣Attribute Authority |
| AA➣Academic Administrator |
| AA➣Autoanswer |
| AA➣Académie d'Architecture (French: Academy of Architecture) |
| AA➣Amy Acker (actress) |
| AA➣Axis of Advance |
| AA➣Austere Academy (Lemony Snicket) |
| AA➣Adios Amigo |
| AA➣Accreditation Authority |
| AA➣Approval Action |
| AA➣Arboricultural Association (Hampshire, England) |
| AA➣Asian Avenue (website) |
| AA➣Application Administrator |
| AA➣Authorized Absence |
| AA➣Assistant Administration |
| AA➣Arithmetical Average |
| AA➣Anchor Assembly |
| AA➣Absent All (day; attendance record) |
| AA➣Advantage Agreement (SprintPCS contract) |
| AA➣Acting Appointment |
| AA➣Aminoacetone |
| AA➣Acupuncture Analgesia |
| AA➣Adult Accompaniment (film ratings) |
| AA➣Aspect Angle (aviation) |
| AA➣Automatic Approach |
| AA➣Avro Arrow (aviation) |
| AA➣Associate in Accounting |
| AA➣Antiquities Authority |
| AA➣Adaptive Array |
| AA➣Administrative Arrangement |
| AA➣Assignment Area (Census) |
| AA➣Always Afloat (shipping) |
| AA➣Absolute Altitude |
| AA➣Applied Aerodynamics (course) |
| AA➣Accounting Authority (INMARSAT) |
| AA➣Advanced Agreement |
| AA➣Ambulance Assistant (emergency services) |
| AA➣Alsthom Atlantique (French electric company) |
| AA➣Altered Attitude (Alcoholics Anonymous slang) |
| AA➣Alert Areas |
| AA➣American Atheists, Inc. |
| AA➣Amazing Assist (golf swing trainer) |
| AA➣Application Association |
| AA➣Ablative Absolute |
| AA➣Author's Alteration |
| AA➣Amount Administered |
| AA➣Absolute Abstinence (Alcoholics Anonymous) |
| AA➣Area of Action |
| AA➣Achievement Age |
| AA➣Avian Adventures (bird products) |
| AA➣Acronym Abuse |
| AA➣Anatomical Adaptation |
| AA➣Ancient Adena (Lineage 2 game) |
| AA➣Achieved Availability |
| AA➣Acquisition Agent |
| AA➣Automated Auction |
| AA➣Arrival Angle |
| AA➣Allah Akhbar (Arabic: God is Great) |
| AA➣Audit Agent |
| AA➣Aptitude Area |
| AA➣Amstrad Action (Amstrad CPC magazine) |
| AA➣Adventurers Anonymous (Alcoholic Anonymous slang) |
| AA➣Archery Australia |
| AA➣Aardvarks Anonymous (comedy group) |
| AA➣Authorized Allowance |
| AA➣Analog-to-Analog |
| AA➣Approximate Absolute (temperature scale) |
| AA➣Amplitude of Accommodation (ophthalmology) |
| AA➣Arithmetic Accuracy |
| AA➣Approved Apparatus |
| AA➣Abort Accept (ITU-T) |
| AA➣Applicant Assistance (DHS/FEMA) |
| AA➣Active-Assistive |
| AA➣assessment agent |
| AA➣Abbreviated Analysis |
| AA➣Anesthesiologist's Assistant |
| AA➣Amiga Anywhere |
| AA➣Academy of Aphasia |
| AA➣Advices of Allowance |
| AA➣Acadia Axemen (Acadia Junior High School) |
| AA➣Antiochian Archdiocese (United States Eastern Orthodox Church subordinate to the Patriarch of Antioch) |
| AA➣Accountable Area |
| AA➣Atrophia Areata |
| AA➣Argentum Astrum (Aleister Crowley's Mystical Fraternity) |
| AA➣Active Adjunct (Sonar) |
| AA➣Ape Alliance |
| AA➣Administering Area (California Governor's Office of Emergency Services) |
| AA➣Arsenal do Alfeite (Portuguese: Arsenal of Alfeite) |
| AA➣Agility Addicts (UK dog agility club) |
| AA➣Automatic Adjust |
| AA➣Alter Aeon (online role playing game) |
| AA➣Accountable Activity (US DoD) |
| AA➣Austrian Alliance (gaming clan) |
| AA➣Amarillo Area Office (US DoE) |
| AA➣Associazione Allievi (Allievi Association, Italy) |
| AA➣Angle Angle Similarity Postulate (geometry) |
| AA➣Axillary Arch (area near the shoulder) |
| AA➣Ann Arbor Railroad Company (Michigan) |
| AA➣Anderson Analytics, LLC |
| AA➣Amigos en Acción (Spanish) |
| AA➣Académie d'Alsace |
| AA➣Accredited in Accountancy |
| AA➣Adam's Army |
| AA➣Autos Anciennes Garage (French automotive repair company) |
| AA➣Annulus Air |
| AA➣Armature Accelerator |
| AA➣Aiming Algorithm |
| AA➣Accelerated Academics |
| AA➣Alt Advancement (gaming rank promotion) |
| AA➣Allied Affairs |
| AA➣Automatic Associator |
| AA➣Alerting Authority |
| AA➣Anal Aneurysm |
| AA➣Attenuation Adaptivity |
| AA➣Advise of Allotment |
| AA➣Anarchists of America |
| AA➣American Annex |
| AA➣Armies in the Atlantic (used with APO/FPO) |
| AA➣Augustinians of the Assumption, Assumptionists (religious) |
| AA➣Stock and Bond Rating |
| AA➣Audits and Assessment Office |
| AA➣Asesoría Automotriz (Guatemala car dealership) |
| AA➣Alternate/Alternative Analysis |
| AA➣Intermediate Level of League (minor league baseball) |
| AA➣Agjencia e Akreditimit (Accredition Agency, Albania) |
| AA➣Absorption Développement Atomique (French: atomic absorption) |
| AA➣Akbar and Aleem Associates Planners & Consulting Engineers (Pakistan) |
| AA➣Second Highest Level of Division I College Athletics (United States) |
| AA➣Arlington Annex Building (Virginia) |
| AA➣ANDVT (Advanced Narrowband Digital Voice Terminal) Airterm (US DoD) |
| AA➣Agglutination Anticyclonique |
| AA➣No sickle-cell Anemia (allele rendering; no sickling gene) |
aa - a dry form of lava resembling clinkers
AA - an international organization that provides a support group for persons trying to overcome alcoholism
AA - an associate degree in arts