AAAA

AAAA may refer to:

• AAAA protocol, within computer security, "authentication, authorization, accounting and auditing" – the AAA protocol combined with auditing
• AAAA record, also known as "IPv6 address record", maps a hostname to a 128-bit IPv6 address in the Domain Name System (DNS)
• Internet Authentication Service, as an acronym for the four main services provided: Authentication, Authorization, Accounting, and Auditing

• Aboriginal Art Association of Australia, a peak body for Aboriginal art in Australia
• American Association for the Advancement of Atheism, an atheistic and antireligious organization
• American Association of Advertising Agencies, a U.S. trade association for advertising agencies
• Anguilla Amateur Athletic Association, former name of the Anguilla Amateur Athletic Federation, governing body for athletics in Anguilla
• Asociación Argentina Amigos de la Astronomía, an amateur astronomy civil association
• Associated Actors and Artistes of America, an association of the performer trade unions Actors' Equity, AFTRA, Agma, and Agva
• Australian Automotive Aftermarket Association, an automotive industry association for automotive aftermarket parts

• AAAA battery, a 1.5 volt battery, smaller than the AAA size
• AaAa, possible reading of the name Aa, an ancient Egyptian architect
• AAAA, a rhyme scheme

• 4A (disambiguation)
• A4 (disambiguation)
• A (disambiguation)
• AA (disambiguation)
• AAA (disambiguation)
• AAAA Tourist attraction
• AAAAA Tourist Attractions of China
• AaAaAA!!! – A Reckless Disregard for Gravity