AAAA may refer to: Internet and computing 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 Organizations Associated Actors and Artistes of America, an association of the performer trade unions Actors' Equity, AFTRA, Agma, and Agva American Association of Advertising Agencies, a U.S. trade association for advertising agencies Asociación Argentina Amigos de la Astronomía, an amateur astronomy civil association Australian Automotive Aftermarket Association, an automotive industry association for automotive aftermarket parts American Association for the Advancement of Atheism, an atheistic and antireligious organization Anguilla Amateur Athletic Association, former name of the Anguilla Amateur Athletic Federation, governing body for athletics in Anguilla Other uses 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 See also 4A (disambiguation) A (disambiguation) AA (disambiguation) AAA (disambiguation) AAAA Tourist attraction AaAaAA!!! – A Reckless Disregard for Gravity