- Agricultural Adjustment Administration.
- Amateur Athletic Association.
- American Automobile Association.
- antiaircraft artillery.
- Automobile Association of America.
Symbol.
- a proportional shoe width size, narrower than AA.
- the highest quality rating for a corporate or municipal bond.
- Electricity. a battery size for 1.5 volt dry cells: diameter, 0.4 inches (1 cm); length 1.7 inches (4.3 cm).
- Amateur Athletic Association.
- American Automobile Association.
- Automobile Association of America.
abbreviation for
- British Amateur Athletic Association
- anti-aircraft artillerySee also triple A
- US Automobile Association of America
- Automobile Association of Australia
also AAA, abbreviation of American Automobile Association, attested 1902, American English, the year the organization was founded.