AV, Av or A.V. may refer to:
Arts and entertainment
- The abbreviation of audiovisual, possessing both a sound and a visual component
 - A.V. (film), a 2005 Hong Kong film directed by Pang Ho-Cheung
 - Adult video, an alternative name/synonym of a pornographic film
 - AV The Hunt, a 2020 Turkish thriller film directed by Emre Akay
 
Businesses and organizations
- America Votes, an American 501(c)4 organization that promotes progressive causes
 - Ambulance Victoria, an ambulance service operated in the Australian state of Victoria
 - Anonymous for the Voiceless, a grassroots animal rights organization specializing in street activism
 - Aston Villa F.C., an English professional football club
 - AV Akademikerverlag GmbH & Co. KG an imprint of the German group VDM Publishing (now OmniScriptum)
 - Avaya, a technology company formerly listed on the New York Stock Exchange with symbol "AV"
 - Avianca (IATA airline code AV)
 - Aviva, British insurance company, listed on the New York Stock Exchange and London Stock Exchange as "AV"
 - AeroVironment, manufacturer of unmanned military aircraft and systems
 - Amusement Vision, the former name of Ryu Ga Gotoku Studio
 
People
- Av or Avrum Gross (1936–2018), American lawyer and Attorney General of Alaska
 - Av or Avrom Isaacs (1926–2016), Canadian art dealer
 - Av Westin (1929–2022), American television producer
 
Places
- Anguilla (FIPS country code and obsolete NATO diagram AV)
 - Antelope Valley, a valley in Southern California
 - Province of Avellino, a province of Italy
 
Science and technology
Anatomy and medicine
- Aerobic vaginitis, vaginal infection associated with overgrowth of aerobic bacteria
 - Arteriovenous (disambiguation)
 - Atrioventricular (disambiguation)
 
Electronics and computing
- Access violation, a computer software error
 - Age verification, system for checking a user's age
 - Antivirus software, used to prevent, detect and remove malicious software
 - Audio and video connector, a cable between two devices
 - Analog video
 - AV Linux, a Linux-based operating system
 
Fluid dynamics
- Annular velocity, speed of the drilling fluid's movement in a column called an annulus in oil wells
 - Apparent viscosity, shear stress divided by shear rate
 
Vehicles
- AV (cyclecar), a British cyclecar manufactured between 1919 and 1924
 - Bavarian A V, an 1853 steam locomotive model
 - A US Navy hull classification symbol: Seaplane tender (AV)
 - Autonomous vehicles
 
Other uses in science and technology
- A-type main-sequence star, in astronomy, abbreviated A V
 - Aperture value mode, setting on photo cameras that allows to choose a specific aperture value
 
Other uses
- Alternative vote, an electoral system used to elect a single winner from a field of more than two candidates
 - Approval voting, a non-ranking vote system
 - Authorised Version of the Bible (also known as King James Version)
 - Av (month), a month in the Hebrew calendar
 - av, the Avar language's ISO 639-1 code
 - Av. or Ave, an abbreviation for Avenue (landscape)
 - Ꜹ or AV from Latin aurum (avrvm), a numismatic abbreviation for "gold"
 - A.V., the putative mark of ébéniste Adam Weisweiler
 - Aviation, abbreviated Av in military use
 - Andhra Vidyalaya College, aka A. V. College, a school in Hyderabad, India
 
See also
- 2023 AV, an asteroid that passed closed to the Earth in 2023
 - A5 (disambiguation)
 - α5 (disambiguation)
 - AV idol, a type of Japanese porn star
 - All pages with titles beginning with AV
 - All pages with titles containing AV
 
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