A2, A02, A002, A², A.II or A-2 may refer to:
Biology and medicine
Genes and proteins A-box 2 of insulin gene HLA-A2, a human MHC HLA-A serotype gene Ectodysplasin A2 receptor, a protein that in humans is encoded by the EDA2R gene Alpha-2 adrenergic receptor Annexin A2, a protein Apolipoprotein A-II, a protein Phospholipase A2, an enzyme Prokaryotic phospholipase A2, an enzyme Hemoglobin A2, a protein Proanthocyanidin A2, an A type proanthocyanidin Urea transporter A2, a protein A2, a variant of blood groups alleles A in the ABO blood group system A2, a subfamily of rhodopsin-like receptors
Medicine ATC code A02 Drugs for acid related disorders, a subgroup of the Anatomical Therapeutic Chemical Classification System Brachydactyly type A2, a disease Noradrenergic cell group A2
Other uses in biology and medicine British NVC community A2 (Lemna minor community), a plant community A2, the second anal vein in the Comstock-Needham system of insect wing segment naming
Computing A-2 (programming language), a follow-on to the A-0 System used on UNIVAC I A2 (operating system), software to run a computer
Electronics DiMAGE A2, a digital camera produced by Minolta IBM A2, an IBM processor used in its supercomputers Cowon A2, a portable multimedia player from Cowon
Gaming A2 Secret of the Slavers Stockade, a module in the Scourge of the Slave Lords series for Dungeons & Dragons Final Fantasy Tactics A2: Grimoire of the Rift
Language Biu-Mandara A.2 languages, an Afro-Asiatic family of languages spoken in Nigeria A2, a second language level in the IB Group 2 subjects A2, a level in the Common European Framework of Reference for Languages
Military A-2 jacket, a leather flight jacket A2, the military staff designation in the continental staff system for air force headquarters staff concerned with intelligence and security A 2, Göta Artillery Regiment designation, a former Swedish Army artillery regiment
Music A due, a musical term often abbreviated to a2 A2, a rock band that performed the song "Chosen One" in the video game Shadow the Hedgehog
Sport A2 (classification), an amputee sport classification HEBA A2, a Greek basketball league A2 volleyball league (Portugal) A2, an Italian Baseball League A2, an Italian Volleyball League A2, a grade in climbing
Television A2 (remote television production), a person who manages audio equipment A2 Stereo or , a television broadcasting system "A2 Teema", a panel discussion episode of Ajankohtainen kakkonen, a Finnish television series Antenne 2, former name (1975–1992) of French national television station France 2, commonly abbreviated "A2"
Transportation Air A-2 Savage or AJ Savage, an aircraft Abrial A-2 Vautour, a French sailplane built in 1925 Antonov A-2, a Soviet glider Breda A.2, a 1921 Italian aircraft Fokker A.II, a German aircraft Nikol A-2, 1939 a prototype of a Polish amphibious flying boat Pfalz A.II, a German Idflieg A-class designation aircraft Reaction Engines A2, a design study for a hypersonic airliner under development Cielos Airlines's IATA code North American AJ Savage carrier-launched bomber (US Navy alphanumeric code "A-2") A2, a Botswana aircraft registration code
Rail A2-class Melbourne tram Bavarian A II, an 1847 German steam locomotive model Ceylon Government Railway A2, a class of steam locomotives LNER Class A2, a class of steam locomotives LNER Peppercorn Class A2, a class of steam locomotives LNER Thompson Class A2, 3 classes of Pacific locomotives Milwaukee Road class A2, a 1901 4-4-2 type steam locomotive SP&S Class A2, an 1887 steam locomotives class Victorian Railways A2 class, a 1907 Australian steam locomotive PRR A2, a Pennsylvania Railroad locomotive classification Prussian A 2, a Prussian railbus model
Road List of A2 roads Anadol A2, a 1970 Turkish car Arrows A2, a 1979 British racing car Audi A2, a 1999 automobile Merzario A2; see template:F1 cars 1979 Route A2 (WMATA), a bus route operated by the Washington Metropolitan Area Transit Authority Audi Quattro A2, a 1984 rally car evolution of the Audi Quattro
Sea HMS A2, a Royal Navy A-class submarine Type A2 submarine, a submarine of the Imperial Japanese Navy during World War II T2-SE-A2, a type of oil tanker constructed and produced in large quantities in the US during World War II Sea Area A2, as defined under the GMDSS system
Space Saturn A-2, a 1959 American rocket A-002, the third abort test of the Apollo spacecraft Aussat (Optus) A2, a 1985 Australian satellite
Tanks M1A2, a version of the American M1 Abrams tank M60A2, a version of the American M60 Patton tank
Weapons A2 (rocket), a German rocket design (1934) AUG A2 Commando, a variant of the Austrian Steyr AUG rifle M16A2 rifle, a variant of the M16 rifle of the US Army AR-15A2, a variant of the Colt AR-15 rifle M16A2 mine, a variant of the M16 mine of the US Army Polaris A-2, a variant of the Polaris missile of the US Navy
Other uses A2 (theater), a person who manages audio equipment DIN4102 A2, a flammability rating for materials ~98% noncombustible A2-level, an education qualification in England, Wales and Northern Ireland A2 milk, a trademark of the A2 Corporation Radio Station A2, a radio station in Lithuania A-2 tool steel, an air-hardening SAE grade of tool steel A-2 visa, a document given to officials representing a foreign government inside the US Agence de l'innovation industrielle (AII), a French governmental agency for technological projects Ann Arbor, Michigan, often referred to as A2 or A2 Bird's Opening's Encyclopaedia of Chess Openings code A2, an international standard paper size A2 or SAE 304, a grade of stainless steel for fasteners A2, a UK Town and Country Planning use class A II, a painting by László Moholy-Nagy, painted in 1924 Sea Area A2, a GMDSS system area YoRHa Type A No. 2, or A2, a character from the video game Nier: Automata Lely Astronaut A2, the second version of the Astronaut robot manufactured by Lely
See also
2A (disambiguation)