AB

AB, Ab, or ab may refer to:

Calendars

• A. B. can refer to Anno Bengali (See the Bengali Calendar).

People

• A. B. is a pen name of Aubrey Beardsley
• A. B. is a pen name of Benjamin Franklin
• A. B. is a pen name of Jonathan Swift

Personal and ranks

• Able Seaman (occupation), a civilian occupation
• Able Seaman (rank), a naval rank
• Adult Baby, a person who practices paraphilic infantilism
• Airman Basic, the lowest rank in the United States Air Force

Places

• AB postcode area, for Aberdeen postcode area in Scotland, UK
• Albania (WMO country code)
• Alberta (Canadian Province/Territory Code)
• Ab, alternate name for Anzab-e Olya, village in Iran
• Air Base, used by the United States Air Force for overseas bases
• Aschaffenburg, code used on German vehicle registration plates

Companies, universities, organizations, and groups

• A & B High Performance Firearms, a defunct sporting firearms manufacturer
• Activision Blizzard, American holding company for Activision and Blizzard Entertainment
• Alfa-Beta Vassilopoulos, a Greek supermarket chain
• Allen-Bradley, a line of industrial control products, manufactured by Rockwell Automation
• AllianceBernstein, a global asset management firm
• American Biograph, AB used as a film logo
• Anheuser-Busch, the world's third largest brewing company

Company codes

• Air Berlin by IATA airline code
• Akcinė bendrovė, Lithuanian equivalent of an S.A. corporation
• Aktiebolag, Swedish for "corporation", similar to AG, Ltd or Inc
• New York stock exchange symbol for AllianceBernstein, a US-based asset management firm

Gangs and secret societies

• Afrikaner Broederbond, the South African secret society from 1918–1994
• Aryan Brotherhood, an American gang

Education

• A-B, Alderson-Broaddus College, a liberal-arts college in West Virginia
• Analecta Bollandiana, academic journal
• artium baccalaureus, the Latin for Bachelor of Arts

Science, technology and mathematics

• AB Class amplifier, a classification of electric amplifier
• Ab, in mathematics, the category of abelian groups
• NZR Ab class a New Zealand steam locomotive

Computing and information technology

• Answerbag, a questions and answers website
• ApacheBench, command line tool for Apache HTTP Server

Medicine

• AB blood, a blood type in the ABO blood group system
• AB toxin, Type III toxin secreted by some pathogenic bacteria
• Antibody, a medical abbreviation
• abs, common name for the rectus abdominis muscle, a paired stomach muscle

Sports

• AB de Villiers, South African middle order batsman and wicketkeeper
• Akademisk Boldklub, AB, a Danish professional football club
• A.B., the nickname of Australian cricketer Allan Border
• AB, At Bat, baseball statistic
• "The ABs", the All Blacks, New Zealand's national rugby union team

Other uses

• Ab (Egyptian heart-soul concept), the Egyptian concept of the heart-soul
• Ab (Semitic), Semitic for "father"
• Āb, Persian word for water, see Ap (water)
• ab, ISO 639-1 language code for the Abkhaz language, a Northwest Caucasian language spoken mostly by the Abkhaz people
• Ab., a Hebrew abbreviation related to Pirkei Avot
• AB, Aitareya Brahmana
• AB, Assembly Bill, a type of legislation in the United States
• Alter Bridge, an American hard rock band
• American Bandstand, a music-performance show
• Ancienne Belgique, AB, Belgian concert hall located in Brussels

See also

• BA (disambiguation)
• A-flat (disambiguation) ("A♭"), the musical note, scale, or key
• Av, a month in the Hebrew calendar
• Aβ, Beta amyloid