AD (Anno Domini) is a designation used to label years following 1 BC in the Julian and Gregorian calendars.

Ad (advertisement) is a form of marketing communication.

AD, A.D. or Ad may also refer to:

People Ad (name), a given name, and a list of people with the name ‘Ad, great-grandson of Shem, son of Noah A.D., nickname of Adrian Dantley (born 1955), American basketball player and coach AD, nickname of Anthony Davis (born 1993), American basketball player A. D. Loganathan (1888–1949), officer of the Indian National Army A. D. Whitfield (born 1943), American football player A. D. Winans (born 1936), American poet, essayist, short story writer and publisher A.D., nickname of Adrian Peterson (born 1985), American football player

Art, entertainment, and media

Audio description, audible narration of visual elements for blind audience members

Film and television Assistant director, a film or television crew member A.D. (film), a 2010 animated zombie horror movie A.D. (miniseries), a 1985 TV miniseries set in ancient Rome A.D. The Bible Continues, a 2015 biblical drama TV miniseries Arrested Development, a 2003–2019 American TV sitcom Attarintiki Daredi, 2013 Indian movie by Trivikram Srinivas

Music Artist diploma, a music performance certificate conferred by higher education institutions AD (band), a Christian rock band A.D. (album), by Solace AD, a 2021 album by The Kleptones

Literature Art director, for a magazine or newspaper AD (poem), by Kenneth Fearing A.D.: New Orleans After the Deluge, a nonfiction graphic novel about Hurricane Katrina Algemeen Dagblad, a Dutch newspaper Architectural Digest, an interior design and landscaping magazine

Other arts and media A.D., the previous North American name of the Anno video game series

Business and economics The equivalent to an S.A. (corporation), a type of legal entity in some countries:

akcionarsko društvo in Bosnia and Herzegovina Aggregate demand, a measure of total purchasing across an economy

Places, transportation, and military AD, ISO 3166-1 country for Andorra Abu Dhabi, capital of the United Arab Emirates Andhra Pradesh, a state in southern India (HASC code) Surakarta, Sukoharjo, Boyolali, Sragen, Karanganyar, Wonogiri and Klaten (vehicle registration prefix AD) Alexander Dennis Ltd., a Scottish bus manufacturing company AD, IATA code for: Air Paradise, a defunct Indonesian airline Azul Brazilian Airlines Airworthiness Directive, an aircraft maintenance requirement notice AD Skyraider, former name of the Douglas A-1 Skyraider, a Navy attack aircraft A US Navy hull classification symbol: Destroyer tender (AD) Air Department, part of the British Admiralty Air defense, an anti-aircraft weaponry and systems Accidental discharge, a mechanical failure of a firearm causing it to fire Active duty, a status of full duty or service, usually in the armed forces

Politics Action Directe, a French far-left militant group Democratic Action (Venezuela) (), a social democratic and center-left political party Democratic Alliance (Portugal, 1979) (), a former centre-right political alliance Democratic Alternative (Malta) (), a green political party

Science and technology

Biology and medicine Addison's disease, an endocrine disorder Adenovirus, viruses of the family Adenoviridae Alzheimer's disease, a neurodegenerative disease Anaerobic digestion, processes by which microorganisms break down biodegradable material Anti-diarrheal, medication which provides symptomatic relief for diarrhea Aortic dissection, an injury to the aorta Approximate digestibility, an index measure of the digestibility of animal feed Atopic dermatitis, form of skin inflammation Atypical depression, a type of depression Autosomal dominant, a classification of genetic traits Autonomic dysreflexia, a potential medical emergency State Herbarium of South Australia (Herbarium Code "AD" in the Index Herbariorum), founded in 1954 as part of the Adelaide Botanic Garden

Chemistry Adamantyl, abbreviated "Ad" in organic chemistry Sharpless asymmetric dihydroxylation, a type of organic chemical reaction

Computing .ad, the top level domain for Andorra Administrative distance, a metric in routing Active Directory, software for the management of Microsoft Windows domains Administrative domain, a computer networking facility Analog Devices, Inc., an American multinational semiconductor company specializing in data conversion, signal processing, and power management technology Analog-to-digital converter, a type of electronic circuit Automatic differentiation, a set of computer programming techniques to speedily compute derivatives AD16, the hexadecimal number equal to decimal number 173

Mathematics Adjoint representation of a Lie group, abbreviated "Ad" in mathematics Axiom of determinacy, a set theory axiom

Physics Antiproton Decelerator, a device at the CERN physics laboratory Autodynamics, a physics theory

Other uses in science and technology Active disassembly, a technology supporting the cost-effective deconstruction of complex materials

Other uses ʿĀd, an ancient Arab tribe, mentioned in the Quran Anno Diocletiani, an alternative year numbering system United States Academic Decathlon, an annual high school competition series of 10 events testing students on various subjects Athletic director, an administrator of a sports department of an American educational institution

See also

AAD (disambiguation) ADD (disambiguation) Anno Domini (disambiguation) BC (disambiguation) Domino (disambiguation)