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:

Art, entertainment, and media

Film and television

  • A.D. (film), a 2010 animated zombie horror film
  • A.D. (miniseries), a 1985 television miniseries set in ancient Rome
  • A.D. The Bible Continues, a 2015 biblical drama television miniseries
  • Arrested Development, an American television sitcom
  • Attarintiki Daredi, 2013 Indian film by Trivikram Srinivas
  • Audio description, a service for visually impaired audience on some TV programs

Music

  • AD (band), a Christian rock band
  • A.D. (album), by Solace

Publications

  • 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

Video games

  • A.D., the previous North American name of the Anno video game series

Other art, entertainment, and media

  • Audio description track, a narration track for visually impaired consumers of visual media

Brands and enterprises

  • Alexander Dennis, a British bus manufacturer
  • Akcionersko društvo (aкционерско друштво), a Macedonian name for a type of company
  • Aktsionerno drujestvo (акционерно дружество), a Bulgarian name for a type of company
  • akcionarsko društvo (aкционарско друштво), a Serbian name for a type of company
  • Analog Devices, a semiconductor company

Educational qualifications

  • Artist diploma, a music performance certificate conferred by higher education institutions.

Military

  • 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
  • Air defense, an anti-aircraft weaponry and systems
  • Air Department, part of the British Admiralty
  • A US Navy hull classification symbol: Destroyer tender (AD)
  • AD Skyraider, former name of the Douglas A-1 Skyraider, a Navy attack aircraft

Organizations

  • 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

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

Places

  • AD, ISO 3166-1 country for Andorra
  • Abu Dhabi, capital of the United Arab Emirates
  • AD, herbarium code for the State Herbarium of South Australia
  • Andhra Pradesh, a state in southern India (HASC code)

Professions

  • Art director, for a magazine or newspaper
  • Assistant director, a film or television crew member
  • Athletic director, the administrator of an athletics program

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, which occurs when an injury to the innermost layer of the aorta allows blood to flow between the layers of the aortic wall, forcing the layers apart
  • 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

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-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

Transportation

  • AD, IATA code for:
  • Air Paradise, a defunct Indonesian airline
  • Azul Brazilian Airlines
  • Airworthiness Directive, an aircraft maintenance requirement notice
  • Surakarta, Sukoharjo, Boyolali, Sragen, Karanganyar, Wonogiri and Klaten (vehicle registration prefix AD)

Other uses

  • ʿĀd, an ancient Arab tribe, mentioned in the Quran
  • Aggregate demand, in macroeconomics
  • Anno Diocletiani, an alternative year numbering system
  • United States Academic Decathlon, a high school academic competition

See also

  • Anno Domini (disambiguation)
  • BC (disambiguation)
  • Domino (disambiguation)