A1, A-1, A01 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 The Group 1: Studies in language and literature (previously First Language) subjects of the IB Diploma Programme refer to the student's first language (native language or otherwise best language). Three courses are available: ''Language A: litera ...

* A1, a secondary school subdivision in the Congolese education system * A1, a

baccalauréat The ''baccalauréat'' (; ), often known in France colloquially as the ''bac'', is a French national academic qualification that students can obtain at the completion of their secondary education (at the end of the ''lycée'') by meeting certain ...

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 The Sijil Pelajaran Malaysia (SPM), or the Malaysian Certificate of Education, is a national examination taken by all fifth-form secondary school students in Malaysia. It is the equivalent of the General Certificate of Secondary Education (GC ...

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 The Singapore-Cambridge General Certificate of Education Ordinary Level (or Singapore-Cambridge GCE O-Level) is a GCE Ordinary Level examination held annually in Singapore and is jointly conducted by the Ministry of Education (MOE), Singapore Exa ...

, an examination in the education system of Singapore * A-1, an Academic grading in Pakistan commonly used in the education system of Pakistan

Entertainment

* sound operator, a member of a theatre crew commonly designated A1

Broadcasting

* A-One (TV channel), a Russian music channel *

A1 TV channel (Macedonia) A1 Televizija (Macedonian: А1 телевизија) or just A1 was a television channel in the Republic of North Macedonia. The second privately owned commercial television station in the country (after Teko TV), it broadcast from 22 January 19 ...

* 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) CHIN (1540 kHz) is a commercial AM radio station in Toronto, Ontario, Canada. It is owned by CHIN Radio/TV International, and broadcasts a multilingual radio format, with programs in Mandarin, Cantonese, Portuguese and other languages. It al ...

radio in Canada * A1, a Slovenian radio network owned by

Radiotelevizija Slovenija Radiotelevizija Slovenija ( en, Radio-Television of Slovenia) – usually abbreviated to RTV Slovenija (or simply RTV within Slovenia) – is Slovenia's national public broadcasting organization. Based in Ljubljana, it has regional broadcastin ...

* A-1 Detective Agency, a fictional detective agency in the radio series '' I Love a Mystery''

Film

* '' 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 is a Japanese animation studio founded by ex- Sunrise producer Mikihiro Iwata and it is a subsidiary of Sony Music Entertainment Japan's anime production firm Aniplex. History The studio was established by SMEJ's animation production divisio ...

, a Japanese animation studio

Games

* A1 Games, an American video game publisher for the PlayStation; see List of PlayStation games (A–L) * ''A1 – Slave Pits of the Undercity'', a component of ''

Scourge of the Slave Lords ''Scourge of the Slave Lords'' (A1–4) is an adventure module for the ''Dungeons & Dragons'' fantasy role-playing game, published by TSR, Inc. in 1986. It combines the contents of four earlier modules, all set in the World of Greyhawk campaign ...

'', and adventure module for the ''Dungeons & Dragons'' role-playing game *

Larsen's Opening Larsen's Opening (also called the Nimzo–Larsen Attack or Queen's Fianchetto Opening) is a chess opening starting with the move: :1. b3 It is named after the Danish grandmaster Bent Larsen. Larsen was inspired by the example of the great L ...

, a chess move, A01 in ECO code * A1, a square on a

chessboard A chessboard is a used to play chess. It consists of 64 squares, 8 rows by 8 columns, on which the chess pieces are placed. It is square in shape and uses two colours of squares, one light and one dark, in a chequered pattern. During play, the bo ...

Music and dance

Aone Beats William Alfred, better known as Aone, is a Nigerian-born American record producer and songwriter, signed to Rick Ross' label Maybach Music Group. He became active in the music industry in 2008 and is known for his work with urban music artists s ...

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-One is a mandopop group created in 2008 under the label Hong Kong Kiss-star entertainment Beijing company (香港Kiss Star娱乐北京有限公司). Names A number of names have been used for this group. * A-One (昆虫一族) * A-One (昆虫 ...

, a Mandopop group *

A1 (band) A1 (stylised as a1) is a United Kingdom, British-Norway, Norwegian boy group formed in 1998. The original line-up consisted of Paul Marazzi, Christian Ingebrigtsen, Mark Read (singer), Mark Read and Ben Adams. Ingebrigtsen is originally from O ...

, a British-Norwegian boy band * Floyd "A1" Bentley, record producer and reality TV star (from Love & Hip Hop: Hollywood) * A1 x J1, a British hip hop duo

Albums

* ''A1'', an album by

Ertuğ Ergin Ertuğ Ergin (May 18, 1970 in Adapazarı – December 14, 2012 in Adapazarı) was a Turkish Turkish may refer to: *a Turkic language spoken by the Turks * of or about Turkey ** Turkish language *** Turkish alphabet ** Turkish people, a Turkic et ...

* ''A1'', an album by Tony Cetinski * '' A One'', an album by Ayumi Hamasaki * ''A1'' (album), a 2002 album by Norwegian band A1

Publications

* ''A1'' (comics), a comics anthology * ''

A-1 Comics ''A-1 Comics'' is a Golden Age of Comic Books, Golden Age comics publication that began in 1944 and ended in 1955, lasting 139 issues. Only the first 17 issues carried the title "A-1" on the cover. Issues #18 and up used the feature as the book tit ...

'', a 1944–1955 Golden Age comics publication * ''A1—The Great North Road'', a book by Paul Graham (photographer)

Finance

* 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)

Food

* A.1. Sauce * A1, a colour grade used in shrimp marketing

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 The Svea Artillery Regiment ( sv, Svea artilleriregemente), designation A 1, was a Swedish Army artillery regiment that traced its origins back to the 17th century. It was disbanded in 1997. The regiment's soldiers were originally recruited from ...

, 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 military staff or general staff (also referred to as army staff, navy staff, or air staff within the individual services) is a group of officers, enlisted and civilian staff who serve the commander of a division or other large militar ...

* 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 The AMX International AMX is a ground-attack aircraft jointly developed by Brazil and Italy. The AMX is designated A-11 Ghibli by the Italian Air Force and A-1 by the Brazilian Air Force. The Italian name, "Ghibli", is taken from the hot dry w ...

aircraft * Kampfgeschwader 53, from its historic ''Geschwaderkennung'' code with the Luftwaffe in World War II

Politics and government

Americas

A-1 visa An A Visa is a category of non-immigrant visas allowing travel to the United States issued to ambassadors, diplomats, government officials, and their support staff. Types A-1 The A-1 visa is granted to many people such as ambassadors, ministers, ...

, a non-immigrant United States visa for governmental officials * A1, an electoral alliance in Suriname, see List of political parties in Suriname

Asia

* A1, a class of South Korean visa * A-1, a classification in the status of Indian cities

Europe

* A1, a rank in the

European Civil Service The European Civil Service is a generic term applied to all staff serving the institutions and agencies of the European Union (EU). Although recruitment is sometimes done jointly, each institution is responsible for its own internal structures ...

* A1, a town planning use class in England and Wales * A1, a racial classification by law enforcement in England and Wales

Places

A1 Mine Settlement, Victoria A1 Mine Settlement is a town in Victoria, Australia, located north of Woods Point on the Mansfield - Woods Point Road, in the Shire of Mansfield. The town has also been known as Castle Reef, Castle Point, and Raspberry Creek. The town began afte ...

, Australia *

Red Bull Ring The Red Bull Ring is a motorsport race track in Spielberg, Austria, Spielberg, Styria, Austria. The race circuit was founded as Österreichring (translation: Austrian Circuit) and hosted the Austrian Grand Prix for 18 consecutive years, from t ...

(formerly ''A1''), a motorsport circuit in Spielberg, Austria * List of A1 roads * Zone A1, a zone in the Greek Alonissos Marine Park in the North Aegean Sea

Science and mathematics

Astronomy

* A1, a class of star, see

stellar classification In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting t ...

* "A1" subobject designations, including: ** NGC 3603-A1

Biology

A1 broth An A1 broth is a liquid culture medium used in microbiology for the detection of fecal coliforms in foods, treated wastewater and seawater bays using the most probable number (MPN) method. It is prepared according to the formulation of Andrews and P ...

, a substance used to detect fecal coliforms * ATC code A01 ''Stomatological preparations'', a subgroup of the Anatomical Therapeutic Chemical Classification System *

Combretastatin A1 Combretastatin A-1 is a combretastatin and a stilbenoid. It can be found in ''Combretum caffrum'', the Eastern Cape South African Bushwillow tree. Biological effects in mammals It is an antiangiogenic agent acting by destabilizing tubulin, which i ...

, a potent cytotoxic agent *

HLA-A1 HLA-A1 (A1) is a human leukocyte antigen serotype within HLA-A "A" serotype group. The serotype is determined by the antibody recognition of α1 subset of HLA-A α-chains. For A1, the alpha "A" chain are encoded by the HLA-A allele group and ...

, a human leukocyte antigen serotype * Proanthocyanidin A1, an A type proanthocyanidin *

Primary auditory cortex The auditory cortex is the part of the temporal lobe that processes auditory information in humans and many other vertebrates. It is a part of the auditory system, performing basic and higher functions in hearing, such as possible relations to ...

, the region of the cerebral cortex where sound is processed * Vitamin A1, the animal form of vitamin A * A1, a segment of the anterior cerebral artery * The first

anal vein Anal may refer to: Related to the anus *Related to the anus of animals: ** Anal fin, in fish anatomy ** Anal vein, in insect anatomy ** Anal scale, in reptile anatomy *Related to the human anus: ** Anal sex, a type of sexual activity involving s ...

in the Comstock-Needham system of insect wing vein naming *

Noradrenergic cell group A1 Noradrenergic cell group A1 is a group of cells in the vicinity of the lateral reticular nucleus of the medullary reticular formation that label for norepinephrine in primates and rodents. They are found in the ventrolateral medulla The ventrolat ...

* A1, a mating type of ''

Phytophthora infestans ''Phytophthora infestans'' is an oomycete or water mold, a fungus-like microorganism that causes the serious potato and tomato disease known as late blight or potato blight. Early blight, caused by '' Alternaria solani'', is also often called ...

'', the cause of potato blight

Earth sciences

* A1, a

landslide classification There have been known various classifications of landslides. Broad definitions include forms of mass movement (geology), mass movement that narrower definitions exclude. For example, the ''McGraw-Hill Encyclopedia of Science and Technology'' distin ...

factor * A-1, a class in the AASHTO Soil Classification System

Mathematics

* A¹ homotopy theory, a concept related to algebraic topology * A1, an 1844 paper by mathematician

Hermann Grassmann Hermann Günther Grassmann (german: link=no, Graßmann, ; 15 April 1809 – 26 September 1877) was a German polymath known in his day as a linguist and now also as a mathematician. He was also a physicist, general scholar, and publisher. His mat ...

* A₁, the

alternating group In mathematics, an alternating group is the group of even permutations of a finite set. The alternating group on a set of elements is called the alternating group of degree , or the alternating group on letters and denoted by or Basic pr ...

on a set with one only element

Sports

Leagues or divisions

* A1 Ring, the former name for the

, a motorsport circuit in Spielberg, Austria * A1, a

climbing grade In rock climbing, mountaineering, and other climbing disciplines, climbers give a grade to a climbing route or boulder problem, intended to describe concisely the difficulty and danger of climbing it. Different types of climbing (such as spor ...

* A1, a ranking in

Keirin – literally "racing cycle" – is a form of motor-paced cycle racing in which track cyclists sprint for victory following a speed-controlled start behind a motorized or non-motorized pacer. It was developed in Japan around 1948 for gamblin ...

track cycling * Class A1 (baseball), a defunct classification within Minor League Baseball

Competition

* A1 (classification), an amputee sport classification * 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 Audio-Animatronics (also known as simply Animatronics, and sometimes shortened to AAs) is the registered trademark for a form of robotics animation created by Walt Disney Imagineering for shows and attractions at Disney theme parks, and subseque ...

figures * A-1, an alternative name for

KS 150 KS 150 is a Gas Cooled Reactor using Heavy Water as a moderator (GCHWR) nuclear reactor design. A single example, A-1, was constructed at the Bohunice Nuclear Power Plant in Jaslovské Bohunice, Czechoslovakia. The power plant suffered a series o ...

, a nuclear reactor in Czechoslovakia, decommissioned in 1979 * A.1 scale, the first formalised atomic time scale in the

International Atomic Time International Atomic Time (abbreviated TAI, from its French name ) is a high-precision atomic coordinate time standard based on the notional passage of proper time on Earth's geoid. TAI is a weighted average of the time kept by over 450 ato ...

standard

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

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 ** A1 Srbija, mobile network operator in Serbia ** A1 Macedonia, mobile network operator in North Macedonia

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 The Sony HDR-HC1, introduced in mid-2005 (MSRP US$1999), is the first consumer HDV camcorder to support 1080i. The CMOS sensor has resolution of 1920x1440 for digital still pictures and captures video at 1440x1080 interlaced, which is the resoluti ...

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 Waldorf Music is a German synthesizer company. They are best known for the Microwave wavetable synthesizer and Blofeld virtual analogue synthesizer. History Waldorf Electronics GmbH was founded in 1988 by Wolfgang Düren, who at the time wa ...

* Xiaomi Mi A1, a smartphone released in 2017, part of series Mi and Android One * Samsung Galaxy A01, a smartphone released in 2020

Vehicles and transport

Aircraft

* A-1 (airship) * A-1 Skyraider *

Albastar A1 The Albastar A1 is a Slovenian mid-wing, T-tailed, single-seat motor glider that was designed by Pavel Potočnik and produced by Albastar Ltd.Bertrand, Noel; Rene Coulon; et al: ''World Directory of Leisure Aviation 2003-04'', page 53. Pagefast Lt ...

, glider * Model 3 A-1, an Aeronautical Products rotorcraft, see

List of rotorcraft This is a list of rotorcraft, including helicopters, autogyros, rotor kites and convertiplanes. A A-B Helicopters * A-B Helicopters A/W 95 American Aircraft International * AAI Penetrator Aero *Aero HC-2 Heli Baby Aero-Ast ...

Cars

* A1, a tyre code *

A1 Grand Prix car The Lola A1GP was a vehicle designed to compete in the A1 Grand Prix. The car was standardised for every team to provide a level playing field for competing nations. It was designed to reduce the volume of "dirty air", allowing drivers to close ...

Anadol A1 Anadol was Turkey's first domestic mass-production passenger vehicle company. Its first model, Anadol A1 (1966–1975) was the second Turkish car after the ill-fated Devrim sedan of 1961. Anadol cars and pick-ups were manufactured by Otosan Oto ...

, 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 In 1903, the Motor Car Act, which mandated the registration of motor vehicles, became law. It took effect on 1 January 1904, though the first number plates were issued in late 1903. The A1 registration plate was issued by London county council ...

, a UK vehicle registration plate * A1, a Volkswagen Group A platform * A-1, a 1939 Buick Roadmaster Series 81C used by Norwegian royalty

Maritime

A1 (shipping) In shipping, the designation A1 is a symbol used to denote quality of construction and material. In the various shipping registers ships are classed and given a rating after an official examination, and assigned a classification mark, which appea ...

, a symbol indicating shipbuilding quality * Sea Area A1, a designation in the Global Maritime Distress Safety System

Surface vessels

* A-1 lifeboat * , the name of multiple US Navy ships * , an Argentine Navy auxiliary ship

Submarines

* , a British A-class submarine of the Royal Navy * A1 type submarine, a type of Japanese Navy submarine * , a Royal Norwegian Navy submarine

Motorcycles

* A1, a Haden (motorcycle) frame * A1, a

Motosacoche Motosacoche was founded in 1899, by Henri and Armand Dufaux, in Geneva, Switzerland. Motosacoche was once the biggest Swiss motorcycle manufacturer, known also for its MAG (Motosacoche Acacias Genève) engines, used by other European motorcycle ma ...

motorcycle * A-1, a 1976 Alligator (motorcycle) * Automatic A1, a Tomos motorcycle * A1 Samurai, see List of Kawasaki motorcycles

Roads

* Highways designated ''A1'' in several countries; see List of A1 roads

Spacecraft

Satellites

A-001 A-001 was the second abort test of the Apollo spacecraft. Objectives Mission A-001 was the second in the series of tests conducted to demonstrate that the launch escape system could safely remove the command module under critical abort condition ...

, 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) ''Astérix'' or A-1 (initially conceptualized as FR.2 or FR-2) is the first French satellite. It was launched on 26 November 1965 by a Diamant A rocket from the CIEES launch site at Hammaguir, Algeria. With ''Astérix'', France became the sixth ...

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 Saturn A-1, studied in 1959, was projected to be the first version of Saturn I and was to be used if necessary before the S-IV liquid hydrogen second stage became available. The first stage, proposed for the Juno V rocket, but finally used fo ...

, a 1959 American rocket * Scout A-1, a 1965 American rocket

Fictional spacecraft

* 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 class designed by Sir Nigel Gresley, including the ''Flying Scotsman'' * LNER Thompson Class A1/1, the rebuild of 4470 ''Great Northern'' by Edward Thompson *

LNER Peppercorn Class A1 The London and North Eastern Railway (LNER) Peppercorn Class A1 is a type of express passenger steam locomotive. Forty-nine original Peppercorn Class A1s were built to the design of Arthur Peppercorn (who was the last Chief Mechanical Engi ...

, a Pacific locomotive designed by Arthur Peppercorn *

NCC Class A1 The LMS (Northern Counties Committee) Class A1 4-4-0 passenger steam locomotives were rebuilds of Belfast and Northern Counties Railway Class A two-cylinder compound locomotives. They operated services throughout the NCC’s broad gauge syste ...

, 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 This list gives an overview of the locomotives and railcars that were in the Prussian state railways. Also included are the locomotives of the Grand Duchy of Hesse State Railways (''Grossherzoglich Hessischen Staatseisenbahnen'') and the Prussia ...

, a 1907 German Prussian railbus *

RER A RER A is one of the five lines in the Réseau Express Régional (English: Regional Express Network), a hybrid commuter rail and rapid transit system serving Paris, France and its suburbs. The line crosses the region from east to west, with all t ...

1, a rapid transit line in France * SP&S Class A1, a 1907 steam locomotives class * Tel Aviv–Jerusalem railway, built on the “A1 Route” * Type A1 or ''California combination'', an Electric tram type * 0-2-2, the UIC classification for the Whyte notation of locomotive wheel arrangements