Wikipedia:
A3, A03, A-3, A.3, A.III or A 3 may refer to:
In business
A3 paper, a paper size defined by ISO 216 (297 × 420 mm)A structured problem solving and continuous improvement approach, first employed at Toyota, and typically used by Lean practitioners.
In biology
A3 regulatory sequence, a sequence for the insulin geneAdenosine A receptor, a human geneAnnexin A3, a human geneATC code A03 Drugs for functional gastrointestinal disorders, a subgroup of the Anatomical Therapeutic Chemical Classification SystemBrachydactyly type A3, a diseaseBritish NVC community A3 (Spirodela polyrhiza - Hydrocharis morsus-ranae community), a British Isles plants communityGibberellin A3, a plant hormoneHLA-A3, a Human MHC Serotype HLA-ASubfamily A3, a rhodopsin-like receptors subfamilyUrea transporter A3, a trans-membrane protein
In games
A3 - Assault on the Aerie of the Slave Lords, a 1981 module for the Dungeons & Dragons fantasy role-playing gameA.III, A-Train III, a 1992 computer gameAlpha Trion, as the former name of this character from the Transformers SeriesA03, Encyclopaedia of Chess Openings code for Bird's Opening
In mathematics
is an example of a root system with numerous physical and geometrical applications
In roads
A3 roads, in several countries
In sports
A3 Champions Cup, a club football tournament also known as the East Asian Champions CupArrows A3, a 1980 racing cara Grade (climbing), to a route that concisely describes the difficulty and danger of climbing the route. Different aspects of climbing each have their own grading system, and many different nationalities developed their own, distinctive grading systems
In vehicles
A-3 lifeboat, a 1947 lifeboat for carrying by the SB-29 SuperfortressAbrial A-3 Oricou, a French touring aircraft designed in 1927Audi A3, a model of automobileAussat (Optus) A3, a 1987 Australian telecommunication satelliteBavarian A III, a 1851 German steam locomotive modelLNER Gresley Classes A1 and A3, a Pacific Locomotive Designed by Sir Nigel GresleyPRR A3, an American PRR 0-4-0 steam locomotivePrussian A 3, a 1910 German railbusSP&S Class A3, a 1914 steam locomotives class
In weapons or military
A-3 Falcon, a variant of the Curtiss Falcon, an attack aircraft manufactured by the Curtiss Aircraft CompanyA-3 Skywarrior, a strategic bomber manufactured by Douglas Aircraft CompanyAUG A3, a variant of the Austrian Steyr AUG rifleFocke-Wulf A 3, a WWI German Focke-Wulf aircraftFokker A.III, a 1915 armed version of the Fokker M.5 aircraftHMS A3, a British A class submarine of the Royal NavyM16A3, a variant of the American M16 rifleM60A3, a variant of the American M60 Patton tankPolaris A-3 missile, an American submarine-launched missileWendes artilleriregemente designation, a former Swedish Army artillery regimentA3, the staff designation for air force headquarters staff concerned with operations
In the United Kingdom, the A3 Air Operations Branch of the Joint Force Air Component HeadquartersUSS Grampus (SS-4), a Plunger class submarine of the United States NavyA3J, the original designation of the US Navy's A-5 Vigilante bomberAggregate 3, the 3rd design in the Aggregate family of rockets, precursor to the V-2 rocket, developed by the Germans during World War II
In music
a musical note, the A below Middle CAlabama 3, a band known as A3 in the U.S. to avoid confusion with the country group AlabamaA-3, a Yamaha combo organAlkaline Trio, a rock band
In government
A-3 visa, a document given to employees of A-1 and A-2 Visa Holders who are representing a foreign government inside the United States of AmericaIn town and country planning in the United Kingdom, A3 is the code for permission to use specific land or premises for restaurants and cafés
other
A-003, the fourth abort test of the Apollo spacecraftBiu-Mandara A.3 languages, an Afro-Asiatic family of languages mainly spoken in Far North Province, Cameroon as well as in Adamawa State, NigeriaCowon A3, an audio media playerThe IATA code for Aegean AirlinesTonga aircraft registration codeARITH-MATIC, as the former name for this programming languageA3 (disambiguation), research chemicalA3, an abbreviation of "Agora! Anarchy! Action!", a popular slogan for Agorism taken from the New Libertarian Manifesto by Samuel Edward Konkin III
