United States Abbreviations and Acronyms
- AAAmerican Airline
- AAALogan County Airport, Lincoln, Illinois, United States
- AAFApalachicola Regional, Apalachicola, United States
- AAKAppliqué armor kit (US)
- ABAAmerican Board of Anesthesiology, Inc.
- ABAAmerican Bar Association
- ABAIAmerican Board of Allergy & Immunology
- ABCAerospace Basic Course
- ABCDAsian Business Club at Darden
- ABCRSAmerican Board of Colon and Rectal Surgery
- ABDAmerican Board of Dermatology, Inc.
- ABELehigh Valley International Airport, Allentown, Pennsylvania, United States
- ABEMAmerican Board of Emergency Medicine
- ABFPAmerican Board of Family Practice
- ABIAbilene Regional Airport, Abilene, Texas, United States
- ABIMAmerican Board of Internal Medicine
- ABLAmbler Airport, Ambler, Alaska, United States
- ABLEAction for a Better Living Environment
- ABMCAmerican Battle Monuments Commission's
- ABMGAmerican Board of Medical Genetics
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