AD (disambiguation)

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:
- Macedonian: Акционерско друштво, romanized: Akcionersko društvo
- Bulgarian: Акционерно дружество, romanized: Aktsionerno druzhestvo
- Serbian: Акционарско друштво, romanized: Akcionarsko društvo
- 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) (Spanish: Acción Democrática), a social democratic and center-left political party
Democratic Alliance (Portugal, 1979) (Portuguese: Aliança Democrática), a former centre-right political alliance
Democratic Alternative (Malta) (Maltese: Alternattiva Demokratika), 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