A1

A1, A-1 or A.1. may refer to:

Education

• A1, the Basic Language Certificate of the Common European Framework of Reference for Languages
• Language A1, the former name for "Language A: literature", one of the IB Group 1 subjects
• A1, a secondary school subdivision in the Congolese education system
• A1, a baccalauréat series in the education system of some parts of France
• A1, a baccalaureate in the Gabonese education system, see Education in Gabon
• A1, the highest category of Qualified Flying Instructor in the Central Flying School of the UK Royal Air Force

Grades

• A1, a grade for the Leaving Certificate, a qualification in the education system of Ireland
• A1, the highest obtainable grade for the Sijil Pelajaran Malaysia examination in Malaysia
• A1, a grade for the Senior Secondary Certificate Examination in Nigeria, see Education in Nigeria
• A1, a grade for the Singaporean GCE 'O' Level, an examination in the education system of Singapore
• A-1, an Academic grading in Pakistan commonly used in the education system of Pakistan

Entertainment

Books, magazines, comics and manga

• A1 (comics), a comics anthology
• A-1 Comics, a 1944–1955 Golden Age comics publication
• A1—The Great North Road, a book by Paul Graham (photographer)

Cinema and films

• A-1 Headline, a 2004 Hong Kong film
• A 001, operazione Giamaica (Our Man in Jamaica), a 1965 Italian adventure film directed by Ernst R. von Theumer
• A1, a 1999 Syrian film, see List of Syrian films
• A1 (2019 film), Indian Tamil film

Companies

• A1 Film Company, a Burmese cinema company
• A-1 Pictures, a Japanese animation studio

Games

• A1 Games, an American video game publisher for the PlayStation
• A1 – Slave Pits of the Undercity, a component of Scourge of the Slave Lords, and adventure module for the Dungeons & Dragons role-playing game
• Larsen's Opening, a chess move, A01 in ECO code
• A1, a square on a chessboard

Music and dance

• Aone Beats or Aone, music producer
• A1, a part in contra dance choreography
• A-1 Sound Studios, a recording studio owned by Herb Abramson
• A-1, an American rap group behind the album Mash Confusion
• A-One (band), a Mandopop group
• A1 (band), a British-Norwegian boy band
• A1 Bentley, rapper and reality TV star (from Love & Hip Hop: Hollywood)

Albums

• A1, an album by Ertuğ Ergin
• A1, an album by Tony Cetinski
• A One, an album by Ayumi Hamasaki
• A1 (album), a 2002 album by Norwegian band A1

Television and radio

• A-One (TV channel), a Russian music channel
• A1 TV channel (Macedonia)
• A1 Report, a television station in Albania
• America One, an American television network
• A 1, see List of radio stations in Austria and Liechtenstein
• A1, a promotional name for CHIN (AM) radio in Canada
• A1, a Slovenian radio network owned by Radiotelevizija Slovenija
• A-1 Detective Agency, a fictional detective agency in the radio series I Love a Mystery

Military

• A-1 Skyraider, a United States military attack aircraft
• A-1 flying jacket, the predecessor of the A-2 flying jacket
• Company A-1, an outfit in the Texas A&M Corps of Cadets
• Svea Artillery Regiment, a Swedish Army regiment
• A-1 (code) was the designation for a code used by the United States Navy during World War I
• A1, a designation of military staff in the continental staff system
• A-1, a grade of Republic of China List of orders, decorations and medals of the Republic of China#General Armed Forces medals
• Forces A1, a naval force in the Battle of Crete, see Crete order of battle
• A-1, Brazilian Air Forces designation for the AMX International AMX aircraft
• Kampfgeschwader 53, from its historic Geschwaderkennung code with the Luftwaffe in World War II

Politics

• A-1 visa, a non-immigrant visa that allows travel to United States for certain governmental officials
• A1, a rank in the European Civil Service
• A1, a class of South Korean visa
• A1, an electoral alliance in Suriname, see List of political parties in Suriname
• A-1, a classification in the Status of Indian cities

Science

Astronomy

• A1, a class of star, see stellar classification
• "A1" subobject designations, including:
  • NGC 3603-A1

Biology

• A1 broth, a substance used to detect fecal coliforms
• ATC code A01 Stomatological preparations, a subgroup of the Anatomical Therapeutic Chemical Classification System
• Combretastatin A1, a potent cytotoxic agent
• HLA-A1, a human leukocyte antigen serotype
• Proanthocyanidin A1, an A type proanthocyanidin
• Vitamin A1, the animal form of vitamin A
• A1, a segment of the anterior cerebral artery
• The first anal vein in the Comstock-Needham system of insect wing vein naming
• Noradrenergic cell group A1

Ecology and earth science

• A1, a landslide classification factor
• A-1, a class in the AASHTO Soil Classification System
• Zone A1, a zone in the Greek Alonissos Marine Park in the North Aegean Sea

Mathematics

• A¹ homotopy theory, a concept related to algebraic topology
• A1, an 1844 paper by mathematician Hermann Grassmann
• A₁, the alternating group on a set with one only element

Neuroscience & Psychology

• Primary auditory cortex, the region of the cerebral cortex where sound is processed

Sports

Leagues or divisions

• A1 Ring, the former name for the Red Bull Ring, a motorsport circuit in Spielberg, Austria
• A1, a climbing grade
• A1, a ranking in Keirin track cycling

Competition

• A1 Grand Prix, a motorsport racing series
• A-1 Liga, the top basketball league in Croatia
• HEBA A1, the top basketball league in Greece
• Phase A1, a phase in a combined driving equestrian competition

Individuals

• A-1 (born 1977), Canadian professional wrestler

Technology

• A1 paper size (59.4×84.1 centimetres or 23.4×33.1 inches)
• A-1, the first series of Disney's Audio-Animatronics figures
• A-1, an alternative name for KS 150, a nuclear reactor in Czechoslovakia, decommissioned in 1979

Computing

• A-1, a programming language that was a successor to the A-0 System written by Grace Hopper in the 1950s
• A1, codename for Windows Live OneCare
• A1, a class of computer security specified in the Trusted Computer System Evaluation Criteria
• Acer Aspire One netbook computer
• Samsung Galaxy A01, smartphone released in 2020

Commercial brands and companies

• A1 Superlink, an Australian Internet service provider merged in 2000 into the Froggy (ISP)
• A-1 Supply, a former name of American gaming machine manufacturer International Game Technology
• A1 Telekom Austria, an Austrian mobile network operator, and its subsidiaries
  • A1 Slovenija, the second largest telecommunications company in Slovenia
  • A1 Bulgaria, mobile network operator in Bulgaria
  • A1 Hrvatska, mobile network operator in Croatia
  • A1 Belarus, mobile network operator in Belarus

Electronic products

• Canon A-1, a 35 mm SLR camera manufactured from 1978 to 1985
• Canon XH-A1, a handheld prosumer HDV camcorder released in 2007
• Minolta Dimage A1, a digital camera produced in 2003
• Sony HVR-A1, the prosumer version of the Sony HDR-HC1 camcorder, which was introduced in 2005
• AVM A1-Card, an ISDN card produced by German company AVM GmbH
• A1 VSTi, a 2002 synthesizer software program produced by Waldorf Music
• Xiaomi Mi A1, a smartphone released in 2017, part of series Mi and Android One

Vehicles and transport

• A1 (shipping), a symbol indicating shipbuilding quality
• A1, a tire code

Aircraft

• A-1 (airship)
• A-1 Skyraider
• Albastar A1, glider
• Model 3 A-1, an Aeronautical Products rotorcraft, see List of rotorcraft

Cars

• A1 Grand Prix car
• Anadol A1, a 1966 Turkish car
• Arrows A1, a 1978 British racing car
• Audi A1, a supermini automobile produced from 2010
• Audi Quattro A1, a 1983 rally car
• Chery A1
• Scania A1, a 1901 car
• Toyota A1, a 1935 car prototype
• A1 registration plate, a UK vehicle registration plate
• A1, a Volkswagen Group A platform

Motorcycles

• A1, a Haden (motorcycle) frame
• A1, a Motosacoche motorcycle
• A-1, a 1976 Alligator (motorcycle)
• Automatic A1, a Tomos motorcycle
• A1 Samurai, see List of Kawasaki motorcycles

Roads

• A1 roads in several countries; see List of A1 roads

Seacraft

Military boats

• A-1 lifeboat
• USS A-1, the name of multiple US Navy ships
• ARA Comandante General Irigoyen (A-1), an Argentine Navy auxiliary ship

Submarines

• HMS A1, a British A class submarine of the Royal Navy
• A1 type submarine, a type of Japanese Navy submarine
• HNoMS Kobben (A-1), a Royal Norwegian Navy submarine

Spacecraft

Satellites

• A-001, the second abort test of the Apollo spacecraft
• Anik A1, a Canadian satellite
• Aussat (Optus) A1, a 1985 Australian telecommunications satellite
• Orbcomm A1, a 1997 American low Earth orbit communications satellite
• Palapa A1, the first 1976 Indonesian Palapa satellite
• Superbird A1, a satellite put into orbit by an Ariane 4 launch on 1 December 1992
• A1, a designation for the French satellite Astérix (satellite)

Rockets

• A1, a model of German Aggregate Series Rocket from World War II
• Hermes A-1, a rocket in the Hermes project
• Saturn A-1, a 1959 American rocket
• Scout A-1, a 1965 American rocket

Fictional

• Alpha-One spacecraft, a fictional spacecraft in the film Buzz Lightyear of Star Command: The Adventure Begins

Trains and public transit

• A1 Steam Locomotive Trust, a charitable trust
• Ayrshire Bus Owners (A1 Service), a bus operator in Scotland
• Bavarian A I, an 1844 German steam locomotive model
• LB&SCR A1 class, a class of locomotives designed by Stroudley and known as the Terriers
• LNER Gresley Classes A1 and A3, a locomotive designed by Sir Nigel Gresley, including the famous Flying Scotsman
• LNER Peppercorn Class A1, a Pacific locomotive designed by A. H. Peppercorn
• NCC Class A1, a 1901 Irish 4-4-0 passenger steam locomotives
• Nishi-magome Station, a Japanese subway station
• PRR A1, an American PRR steam locomotive
• Prussian A 1, a 1907 German Prussian railbus
• RER A1, a rapid transit line in France, see: RER A
• SP&S Class A1, a 1907 steam locomotives class
• Tel Aviv–Jerusalem railway which was built along the “A1 Route” (which was the name of the high-speed route alternative that was selected for the line).
• Type A1 or California combination, a type of electric tram, see: Trams in Adelaide#Electric tram types
• 0-2-2, the UIC classification for the Whyte notation for railway locomotive wheel arrangements

Other uses

• A1 Mine Settlement, Victoria, Australia
• Sound operator, a member of a theatre crew commonly designated A1
• A1 or A-1, two investment grades for bonds
• A1, a country risk rating assigned by Compagnie Francaise D’assurance Pour Le Commerce Exterieur (Coface)
• A1, a colour grade used in shrimp marketing
• A1, a learner division in the Common European Framework of Reference for Languages
• A1, a Race (classification of human beings)#Law enforcement used by Scotland Yard
• A.1 scale, the first formalised atomic time scale defined by USNO in the International Atomic Time standard
• Sea Area A1, a designation in the Global Maritime Distress Safety System
• A1, a planning class from the Town and Country Planning (Use Classes) Order 1987 in the UK
• A.1. Steak Sauce

See also

• 1A (disambiguation)
• A-1 Yola (disambiguation)
• AL (disambiguation)
• Aleph One (disambiguation)
• All pages with titles containing A1