AAA, or Triple-A is a three-letter acronym or abbreviation, and may refer to:
- a rank on an alphabetical grading scale (two ranks higher than 'grade A')
- Anti-aircraft artillery
- The Morse code for aerial attacker, used in conjunction with SOS
- Agricultural Adjustment Act of 1933, US federal legislation
- Agricultural Adjustment Act of 1938, US federal legislation
- American Automobile Association a motor club, also called "Triple A"
- AAA battery, a standard size of dry cell