AD (Anno Domini) is a designation used to label years following 1 BC in the Julian and Gregorian calendars while 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
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
AD (poem), by Kenneth Fearing
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
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, anti-aircraft weaponry and systems
Air Department, part of the British Admiralty
Destroyer tender, a type of support ship (US Navy hull classification symbol AD)
AD Skyraider, former name of the Douglas A-1 Skyraider, a Navy attack aircraft
Organizations
Action Directe, French far-left militant group
Democratic Action (Venezuela) (Spanish: Acción Democrática), social democratic and center-left political party
Democratic Alliance (Portugal) (Portuguese: Aliança Democrática), a former centre-right political alliance
Democratic Alternative (Malta) (Maltese: Alternattiva Demokratika), 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
Anthony Davis (born 1993), American basketball player
Antonio Davis (born 1968), 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
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
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
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)
Dominus (disambiguation)