AAAA

Proper Noun

• Amateur Athletic Association of America
• American Association for the Advancement of Agnosticism
• American Association for the Advancement of Atheism
• American Association for Affirmative Action
• American Association of Advertising Agencies
• Antique Aeroplane Association of Australia
• Antique Appraisal Association of America
• Army Aviation Association of America
• Associated Actors and Artists of America
• Association of Accredited Advertising Agencies
• Australian Advertising Advisory Authority
• Australian Association of Advertising Agencies
• Australian Automotive Aftermarket Association
• "Authentication, Authorization, Accounting, and Auditing", the four main services provided by an Internet Authentication Service.

Noun

• A specific size and configuration of electric battery.
• A baseball player who is too good for Minor League Baseball, but not good enough for Major League Baseball.
• A type of DNS record used to indicate the IPv6 internet address of a DNS name.