A2

A2, A02, A002, A.II or A-2 may refer to:

In broadcasting

* Radio Station A2, a radio station in Lithuania
* A2 Stereo or _de. "Zweikanalton", an analogue television broadcasting system
* Antenne 2 or France 2, a French public TV network

In biology

* A2 regulatory sequence for the insulin gene
* Annexin A2
* Apolipoprotein A2
* ATC code A02, a division of the Anatomical Therapeutic Chemical Classification System
* Hemoglobin A2
* HLA-A2, a human MHC HLA-A serotype
* Phospholipase A2, an enzyme
* Prokaryotic phospholipase A2, an enzyme
* A2, a variant of blood groups alleles A in AB0-blood group system

In technology

* A2 (rocket), a German design of rocket during World War II
* A-2 Savage or AJ Savage, an aircraft
* A2 type submarine, a single submarine of the Imperial Japanese Navy during World War II
* Abrial A-2 Vautour, a French sailplane built in 1925
* Antonov A-2, a glider
* Audi A2, a 1999 automobile
* Bavarian A II, a 1847 German steam locomotive model
* Breda A.2, a 1921 Italian aircraft
* Fokker A.II, a German aircraft
* HMS "A2", an A-class submarine of the Royal Navy
* LNER Class A2, a class of steam locomotives
** LNER Peppercorn Class A2
** LNER Thompson Class A2
* Milwaukee Road class A2, a 1901 4-4-2 type steam locomotive
* Nikol A-2, 1939 a prototype of a Polish amphibious flying boat
* Pfalz A.II, a German aircraft
* PRR A2, an American
* Prussian A 2, a German railbus model
* Reaction Engines A2, a design study for a hypersonic airliner under development
* Saturn A-2, a 1959 American rocket
* SP&S Class A2, a 1887 steam locomotives class
* Victorian Railways A2 class, a 1907 Australian steam locomotive

and also :
* A2, a grade of tool steel
* A2, a grade of stainless steel for fasteners
* A2 Aviator, an LED flashlight by Surefire
* Cowon A2, a portable multimedia player from Cowon Systems, Inc.
* %A2, the URL-encoded version of the (¢) character
* A-002, the third abort test of the Apollo spacecraft

Roads and highways

; motorways :
* A2 autoroute, a French motorway connecting Combles to border with Belgium
* A2 highway (Croatia), a highway in Croatia connecting Zagreb to Slovenia
* A2 highway (Lithuania)
* A-2 (Michigan county highway)
* A2 motorway (Cyprus)
* A2 motorway (Netherlands), a Dutch motorway running from Amsterdam to the Belgian border near Maastricht
* A2 motorway (Romania), connecting Bucharest to Constanţa, nicknamed "Autostrada Soarelui" (The Sun's Motorway)
* A2 motorway (Slovenia), a motorway in Slovenia
* A2 motorway (Switzerland), motorway connecting Basel to Chiasso
* A2 - Auto-estrada do Sul, a Portuguese highway connecting Lisbon to the Algarve
* Autostrada A2 (Poland), a motorway running from border with Germany to border crossing with Belarus through the middle of the country
* Autovía A-2, a Spanish autovía connecting Madrid to Barcelona
* Hemus motorway, Bulgaria
* Bundesautobahn 2, a German autobahn connecting the Ruhr Area to Berlin
* Bass Highway (Tasmania), a state highway in Tasmania, Australia
* Interstate A-2 in Alaska, United States
* Südostautobahn, a motorway in Austria
* National Highway A2, Queensland

; roads :
* A2 national road (Latvia), connecting Riga to the Estonian border
* A2 road (Great Britain), a major road connecting London to Dover, partially following the Roman road "Watling Street"
* A2 road (Isle of Man), a primary road which connects Douglas with Ramsey
* A2 road (Northern Ireland)
* A2 road (Zimbabwe),a road in Zimbabwe
* A002, National Route A002 (Argentina)

port

* A2 Ethniki, the second division of the highest professional basketball competition among pro clubs in Greece
* a climbing grade
* A2 (Italian volleyball league), a category in the Italian Volleyball League
* A2 (Portuguese volleyball league) and A2 (Portuguese women's volleyball league)

Other uses

* A2 paper size, an international standard paper size (420×594 mm) defined by ISO 216
* A2 (theater), a stagehand who manages microphones for a performance
* A2-level, an education qualification in England, Wales and Northern Ireland
* A-2 jacket, a leather flight jacket
* A2, Cielos del Peru's IATA code
* A2, a level in the Common European Framework of Reference for Languages
* A2, a town and country planning use class in the UK
* A² or A2, a nickname for Ann Arbor, Michigan
* a2 (music), a musical term
*
* A2 Hosting, a Linux Hosting company
* A2, the designation for air force headquarters staff concerned with intelligence and security
* A02, Bird's Opening Encyclopaedia of Chess Openings code
* A 2, Göta artilleriregemente designation, a former Swedish Army artillery regiment
* Botswana aircraft registration code