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 The Common European Framework of Reference for Languages: Learning, Teaching, Assessment, abbreviated in English as CEFR or CEF or CEFRL, is a guideline used to describe achievements of learners of foreign languages across Europe and, increasing ...

* 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 Education in Gabon is largely based on the French educational system. On the federal level, it is regulated by two Ministries: the Ministry of Education, which is in charge of Pre-school through to High School, and the Ministry of Higher Education ...

* A1, the highest category of

Qualified Flying Instructor A Qualified Flying Instructor is someone who is qualified to conduct flight training for pilots. They may also have other roles in aviation, such as aircraft certification and flight reviews, depending on the jurisdiction. Every country has its own ...

in the Central Flying School of the UK Royal Air Force

Grades

* A1, a grade for the

Leaving Certificate A secondary school leaving qualification is a document signifying that the holder has fulfilled any secondary education requirements of their locality, often including the passage of a final qualification examination. For each leaving certifica ...

, 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 Education in Nigeria is overseen by the Federal Ministry of Education. The local authorities take responsibility for implementing state-controlled policy regarding public education and state schools. The education system is divided into Kinde ...

* 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 Exam ...

, an examination in the education system of Singapore * A-1, an

Academic grading in Pakistan Academic grading in Pakistan is based on a percentage system. Lower secondary education Lower secondary education contains the Grade 6 to Grade 10 classes. Grading Formula 45 Grading of Division WES – World Education Services Upper seconda ...

commonly used in the education system of Pakistan

Entertainment

sound operator An audio engineer (also known as a sound engineer or recording engineer) helps to produce a recording or a live performance, balancing and adjusting sound sources using equalization, dynamics processing and audio effects, mixing, reproduction, ...

, a member of a theatre crew commonly designated A1

Broadcasting

A-One (TV channel) A-One Hip-Hop Music Channel was a Russian music television channel broadcasting hip hop music. The channel was broadcast on the satellite ABS-2 (FTA), on the "Tricolor TV" platform, and in 850 cable packages. History After briefly being known ...

, a Russian music channel * A1 TV channel (Macedonia) *

A1 Report A1 News Channel (formerly TV Ballkan, A1 TV, A1 Report, and since closed) was an all news private television station in Tirana, Albania founded by media mogul Koco Kokedhima and owned by Shekulli newspaper. History A1 Report started as TV Ballka ...

, a television station in Albania *

America One America One was an American television network established in 1995 by USFR Media Group through its America One Television subsidiary.

, an American television network * A 1, see

List of radio stations in Austria and Liechtenstein This is a list of radio stations operating in Austria. The Austrian regulatory agency (''Kommunikationsbehörde Austria'') acts as frequency assignment authority. Austria Public broadcasting *ORF (''Österreichischer Rundfunk'') ** Österreich 1 ...

* 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 also ...

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 ''I Love a Mystery'' is an American radio drama series that aired 1939–44, about three friends who ran a detective agency and traveled the world in search of adventure. Written by Carlton E. Morse, the program was the polar opposite of Morse's ...

Film

* ''

A-1 Headline ''A-1'' (), known internationally as ''A-1 Headline'', is a 2004 Hong Kong thriller film written and directed by Gordon Chan and Rico Chung and starring Anthony Wong, Angelica Lee, Edison Chen, with a special appearance by Tony Leung Ka-fai. C ...

'', a 2004 Hong Kong film * ''A 001, operazione Giamaica'' (''

Our Man in Jamaica ''Our Man in Jamaica''/''Operation Jamaica'' ( it, A 001, operazione Giamaica) is a 1965 Italian Spanish German international co-production Eurospy adventure film directed by an uncredited Mel Welles. It was credited to for reasons of European fun ...

''), a 1965 Italian adventure film directed by Ernst R. von Theumer * ''A1'', a 1999 Syrian film, see

List of Syrian films This is a list of Syrian films. 22 1970s 1971 * ''A Woman of Fire'' 1973 * ''The Dupes'' (Tewfik Saleh) *''Memory of a Night of Love'' * '' Wajh Akhar Lil Hub'' ( Muhammad Shahin) 1974 * ''Al-Mughamara'' ( Muhammad Shahin) * '' Everyday Life i ...

* ''A1'' (2019 film), Indian Tamil film ;Companies *

A1 Film Company A1 Film Company is a Burmese-owned cinema company. The company was awarded to the Myanmar Motion Picture Academy Awards. It produced the 1940 film ''Chit Yay Sin'' and 1935 ''Japan Yin Thwe''. Key actors * Tin Maung (1913–2000), a two-time Bu ...

, 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 division, ...

, a Japanese animation studio

Games

A1 Games 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 * A1, a ...

, an American video game publisher for the PlayStation; see

List of PlayStation games (A–L) This is a list of games for the Sony PlayStation video game system, organized alphabetically by name. There are often different names for the same game in different regions. The final licensed PlayStation game released in Japan (not counting re ...

* ''A1 – Slave Pits of the Undercity'', a component of ''

Scourge of the Slave Lords ''Scourge of the Slave Lords'' (A1–4) is an Adventure (Dungeons & Dragons), 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 ...

'', 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 Latv ...

, 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 :''This article supplements the main Contra dance article.'' Contra dance choreography specifies the dance formation, the figures, and the sequence of those figures in a contra dance. The figures repeat, ideally, in a graceful flowing pattern, a ...

* A-1 Sound Studios, a recording studio owned by

Herb Abramson Herbert C. Abramson (November 16, 1916 – November 9, 1999) was an American record executive, record producer, and co-founder of Atlantic Records. Life and career Abramson was born in 1916 to a Jewish family in Brooklyn. He studied to be a den ...

* A-1, an American rap group behind the album

Mash Confusion ''Mash Confusion'' is the debut album by American rap group A-1, released August 24, 1999 on Sick Wid It and Jive Records. A-1 is composed of Big Bone and D-Day. The album features production by Bosko, K-Lou, Sam Bostic, Studio Ton and Tone Capone ...

* A-One (band), a Mandopop group *

A1 (band) A1 (stylised as a1) is a British-Norwegian boy group formed in 1998. The original line-up consisted of Paul Marazzi, Christian Ingebrigtsen, Mark Read and Ben Adams. Ingebrigtsen is originally from Oslo, Norway, while the other members origi ...

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

A1 x J1 A1 x J1 (real names Phineas Waweru and Joshua Somerkun) are a British British hip hop, hip hop duo. They released their debut single "Latest Trends" in February 2021, which charted at number 2 in the UK and was remixed by Aitch (rapper), Aitc ...

, a British hip hop duo

Albums

* ''A1'', an album by

Ertuğ Ergin Ertuğ Ergin (May 18, 1970 in Adapazarı Adapazarı () is a city in northwestern Turkey and the central district of Sakarya Province. The province itself was originally named Adapazarı as well. Adapazarı is a part of the densely populated regio ...

* ''A1'', an album by

Tony Cetinski Anthony Cetinski (born 31 May 1969), known professionally as Tony Cetinski, is a Croatian pop singer. Today, he is one of the most popular male singers in Croatia and countries of former Yugoslavia. Biography Born into a family of musicians in P ...

* ''

A One ''A One'' is the sixteenth full-length studio album recorded by Japanese singer Ayumi Hamasaki. It was released on April 8, 2015 (exactly 17 years after her debut) by Avex Trax. It reached #4 on the Oricon charts. Background and promotion On D ...

'', an album by Ayumi Hamasaki * ''A1'' (album), a 2002 album by Norwegian band A1

Publications

* ''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) Paul Graham (born 1956) is a British fine-art and documentary photographer. He has published three survey monographs, along with 17 other publications. His work has been exhibited in the Italian Pavilion of the 49th Venice Biennale (2001), ...

Finance

* A1 or A-1, two

investment grade In investment, the bond credit rating represents the credit worthiness of corporate or government bonds. It is not the same as an individual's credit score. The ratings are published by credit rating agencies and used by investment professionals ...

s for bonds * A1, a country risk rating assigned by Compagnie Francaise D’assurance Pour Le Commerce Exterieur (Coface)

Food

A.1. Sauce A.1. Sauce (formerly A.1. Steak Sauce and sometimes stylized as A1 Sauce in certain markets) is a brand of brown sauce produced by Brand & co, a subsidiary of Premier Foods in the United Kingdom (as "Brand's A.1. Sauce") and in North America by ...

* A1, a colour grade used in

shrimp marketing Shrimp are marketed and commercialised with several issues in mind. Most shrimp are sold frozen and marketed based on their categorisation of presentation, grading, colour, and uniformity. Presentation The main forms of presentation are ''he ...

Military

A-1 Skyraider The Douglas A-1 Skyraider (formerly known as the AD Skyraider) is an American single-seat attack aircraft in service from 1946 to the early 1980s. The Skyraider had an unusually long career, remaining in front-line service well into the Jet Age ...

, a United States military attack aircraft *

A-1 flying jacket The Type A-2 leather flight jacket is an American military flight jacket originally invented and developed for and closely associated with World War II U.S. Army Air Forces pilots, navigators and bombardiers, who often decorated their jackets ...

, the predecessor of the A-2 flying jacket *

Company A-1 Company A-1 is the oldest outfit in the Texas A&M University, Texas A&M Texas A&M Corps of Cadets, Corps of Cadets, having been the original outfit formed for all 20 of A&M's first cadets in 1876. Unit genealogy *Company A (1876-1901) *Company A ...

, 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 S ...

, a Swedish Army regiment *

A-1 (code) A-1 was the designation for a code used by the United States Navy during World War I that replaced the Secret Code of 1887, SIGCODE and another system designed for radio communication. The cryptographic system was developed by Lt. W.W. Smith in th ...

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 military u ...

* 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 This is the complete order of battle for the Battle of Crete and related operations in 1941. Allied Land forces Commonwealth & Allied Forces, Crete - "Creforce" ;Headquarters Creforce - (Eastern Zone, east of Chania) :Major-General Bernard Freyb ...

* 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 ...

aircraft *

Kampfgeschwader 53 ''Kampfgeschwader'' 53 "Legion Condor" (KG 53; English: ''Condor Legion'') was a Luftwaffe bomber wing during World War II. Its units participated on all of the fronts in the European Theatre until it was disbanded in May 1945. At all times it ...

, 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, di ...

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

List of political parties in Suriname This article lists political parties in Suriname. Suriname has a multi-party system with numerous political parties, in which no one party often has a chance of gaining power alone, and parties must work with each other to form coalition governmen ...

Asia

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

status of Indian cities The ''classification of Indian cities'' is a ranking system used by the Government of India to allocate House Rent Allowance (HRA) to public servants employed in cities in India. HRA is also used by the Indian Revenue Service (IRS) to provide inc ...

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 a ...

* 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, Australia *

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

(formerly ''A1''), a motorsport circuit in Spielberg, Austria *

List of A1 roads A list of road designation, roads designated A1 (disambiguation), A1, sorted by alphabetical order of country. * A01 highway (Afghanistan), a long ring road or beltway connecting Kabul, Kandahar, Herat and Mazar * A1 motorway (Albania), connecti ...

* Zone A1, a zone in the Greek

Alonissos Marine Park The National Marine Park of Alonnisos Northern Sporades ( el, Εθνικό Θαλάσσιο Πάρκο Αλοννήσου Βορείων Σποράδων, ΕΘΠΑΒΣ) was founded by Presidential Decree on May 16, 1992. It was the first of its ki ...

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 stellar spectrum, spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a Prism (optics), prism or diffraction grati ...

* "A1" subobject designations, including: **

NGC 3603-A1 NGC 3603-A1 (HD 97950A1) is a double-eclipsing binary star system located at the centre of the HD 97950 cluster in the NGC 3603 star-forming region, about 25,000 light years from Earth. Both stars are of spectral type WN6h and among ...

Biology

* A1 broth, a substance used to detect fecal coliforms *

ATC code A01 A01A Stomatological preparations A01AA Caries prophylactic agents :A01AA01 Sodium fluoride :A01AA02 Sodium monofluorophosphate :A01AA03 Olaflur :A01AA04 Stannous fluoride :A01AA30 Combinations :A01AA51 Sodium fluoride, combinations A01AB Anti-i ...

''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 Procyanidin A1 is an A type proanthocyanidin dimer. It is an epicatechin-(2β→7,4β→8)-catechin dimer found in ''Rhododendron spiciferum'', in peanut skins and in ''Ecdysanthera utilis''. Procyanidin B1 can be converted into procyanidin 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 Retinol, also called vitamin A1, is a fat-soluble vitamin in the vitamin A family found in food and used as a dietary supplement. As a supplement it is used to treat and prevent vitamin A deficiency, especially that which results in xerophtha ...

, the animal form of vitamin A * A1, a segment of the

anterior cerebral artery The anterior cerebral artery (ACA) is one of a pair of cerebral arteries that supplies oxygenated blood to most midline portions of the frontal lobes and superior medial parietal lobes of the brain. The two anterior cerebral arteries arise from t ...

* 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 involvi ...

in the Comstock-Needham system of insect wing vein naming * Noradrenergic cell group A1 * 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 "pot ...

'', 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 In algebraic geometry and algebraic topology, branches of mathematics, homotopy theory or motivic homotopy theory is a way to apply the techniques of algebraic topology, specifically homotopy, to algebraic varieties and, more generally, to scheme ...

, 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 prop ...

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 spo ...

* 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) A1 is an amputee sport classification used by the International Sports Organization for the Disabled (ISOD) for people with acquired or congenital amputations. This class is for sportspeople who have both legs amputated above the knee. Their ampu ...

, an amputee sport classification *

A1 Grand Prix A1 Grand Prix (A1GP) was a "single-make" open-wheel auto racing series that ran from 2005 until 2009. It was unique in its field in that competitors solely represented their nation as opposed to themselves or a team, the usual format in most for ...

, a motorsport racing series *

A-1 Liga The Hrvatski Telekom Premijer liga ( en, Hrvatski Telekom Premier League, ), also known as HT Premijer liga or simply Premijer liga, is the first tier level men's professional basketball league in Croatia. It began in 1991, following the breakup ...

, the top basketball league in Croatia *

HEBA A1 The Greek Basket League (GBL), often also referred to as the Greek A1 Basketball League, or Greek Basketball Championship (originally called Panhellenic Basketball Championship), and also known as the Stoiximan Basket League for sponsorship reaso ...

, the top basketball league in Greece * Phase A1, a phase in a

combined driving Combined may refer to: * Alpine combined (skiing), the combination of slalom and downhill skiing as a single event ** Super combined (skiing) * Nordic combined (skiing), the combination of cross country skiing and ski jumping as a single event * T ...

equestrian competition

Individuals

A-1 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 * A1, a ...

(born 1977), Canadian professional wrestler

Technology

A1 paper size ISO 216 is an international standard for paper sizes, used around the world except in North America and parts of Latin America. The standard defines the "A", "B" and "C" series of paper sizes, including A4, the most commonly available 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 subsequent ...

figures * A-1, an alternative name for KS 150, 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 atomic ...

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 Windows Live OneCare (previously Windows OneCare Live, codenamed A1) was a computer security and performance enhancement service developed by Microsoft for Windows. A core technology of OneCare was the multi-platform RAV (Reliable Anti-virus), wh ...

* A1, a class of computer security specified in the

Trusted Computer System Evaluation Criteria Trusted Computer System Evaluation Criteria (TCSEC) is a United States Government Department of Defense (DoD) standard that sets basic requirements for assessing the effectiveness of computer security controls built into a computer system. The TCS ...

Acer Aspire One Acer Aspire One is a line of netbooks first released in July 2008 by Acer Inc. Many characteristics of a particular model of Acer Aspire One are dictated by the CPU platform chosen. Initial models were based on the Intel Atoms. Later, model ...

netbook computer

Commercial brands and companies

* A1 Superlink, an Australian Internet service provider merged in 2000 into the

Froggy (ISP) Froggy was an Australian business, that primarily operated an ISP amongst other things, established and owned by entrepreneur Karl Suleman. At the time of its collapse the company had around 30,000 customers. Froggy was originally two separate IS ...

* A-1 Supply, a former name of American gaming machine manufacturer

International Game Technology International Game Technology PLC (IGT), formerly Gtech S.p.A. and Lottomatica S.p.A., is a multinational gambling company that produces slot machines and other gambling technology. The company is headquartered in London, with major offices in ...

A1 Telekom Austria A1 Telekom Austria (A1, ''A eins'') is the leading fixed and mobile network operator in Austria, with 5.4 million mobile and 2.3 million fixed-line customers. A1 Telekom Austria traces its origins to Austria's first GSM mobile phone network whi ...

, an Austrian mobile network operator, and its subsidiaries **

A1 Slovenija A1 Slovenija is a telecommunications company operating the second largest mobile network in Slovenia. Prior to April 2017, the company was known as Si.mobil. History The company was established in December 1997 and began operating in March 1999 a ...

, the second largest telecommunications company in Slovenia **

A1 Bulgaria A1 Bulgaria (previously known as Mtel or Mobiltel) is a telecommunications company in Bulgaria ownedy by A1 Telekom Austria Group. History A1 Bulgaria was founded in March 1994 but was not launched commercially until September 1995 (as ''Citron'' ...

, mobile network operator in Bulgaria **

A1 Hrvatska A1 Hrvatska d.o.o. is a Croatian telecommunications company owned by A1 Telekom Austria Group. The comapny was launched in July 1999 as Vipnet and rebranded to A1 in 2018. History 1999–2009 Granted the concession for the second GSM network ...

, mobile network operator in Croatia **

A1 Belarus Unitary enterprise A1 ( be, link=no, Унiтарнае прадпрыемства «А1», A1) is the largest private telecom, ICT & content service provider in Belarus. The company provides GSM 900/1800, UMTS (WCDMA/HSDPA/HSUPA/HSPA+) and 4G ...

, mobile network operator in Belarus **

A1 Srbija A1 Srbija d.o.o. (formerly ''Vip mobile'') is a Serbian mobile network operator owned by A1 Telekom Austria Group. As of 2020, it is the third largest mobile telephony operator with market share of 25.67%. History On 1 December 2006, the mobil ...

, mobile network operator in Serbia **

A1 Macedonia A1 Macedonia DOO Skopje is a telecommunications company in North Macedonia owned by A1 Telekom Austria Group. A1 offers broadband internet, cable and terrestrial television, mobile telephony and landline. History A1 Macedonia (then known as ...

, mobile network operator in North Macedonia

Electronic products

Canon A-1 The Canon A-1 is an advanced-level single-lens reflex (SLR) 35 mm film camera for use with interchangeable lenses. It was manufactured by Canon Camera K. K. (today Canon Incorporated) in Japan from April 1978 to 1985. It employs a horizontal ...

, a 35 mm SLR camera manufactured from 1978 to 1985 *

Canon XH-A1 This is a list of camcorders manufactured under the Canon brand. Canon Cinema EOS digital camcorders * Canon EOS-1D C * Canon EOS C70 * Canon EOS C100 * Canon EOS C100 Mark II * Canon EOS C200/C200B *Canon EOS C300 *Canon EOS C300 Mark II * Cano ...

, a handheld prosumer HDV camcorder released in 2007 *

Minolta Dimage A1 The Minolta DiMAGE A1 is a 5 megapixel bridge digital camera with electronic viewfinder manufactured by Minolta. It was introduced in July 2003, replacing the Minolta Dimage 7 series. It was the first Minolta product to incorporate the Anti-Sh ...

, 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 AVM is a consumer electronics company founded in 1986 in Berlin, Germany. The company produces communications, networking devices such as DSL, ISDN, Wireless and VoIP products. It had sales of €580 million in 2020 with 840 employees. It is we ...

* 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 w ...

Xiaomi Mi A1 The Xiaomi Mi A1 (also known as Xiaomi Mi 5X), is a smartphone co-developed by Google—as part of its Android One initiative—and Xiaomi that runs on the Android operating system. Specifications Hardware Mi A1 comes with a 5.5" touchscr ...

, a smartphone released in 2017, part of series Mi and Android One *

Samsung Galaxy A01 The Samsung Galaxy A01 is a budget Android (operating system), Android smartphone manufactured by Samsung Electronics as part of its Samsung Galaxy A series, A series. The phone was announced in December 2019 and released in January 2020. The phon ...

, a smartphone released in 2020

Vehicles and transport

Aircraft

A-1 (airship) The E class of US Navy blimps comprised a single airship, built during World War I by Goodyear as one of a group of three small blimps offered to the US government. Two were purchased for the US Navy and one for the US Army. The Navy blimps were ...

* Albastar A1, 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-Astra ...

Cars

* A1, a

tyre code Automotive tires are described by an alphanumeric tire code (in North American English) or tyre code (in Commonwealth English), which is generally molded into the sidewall of the tire. This code specifies the dimensions of the tire, and some o ...

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, a 1966 Turkish car *

Arrows A1 The Arrows A1 was the car with which Arrows Grand Prix International competed in the and Formula One seasons. It replaced the Arrows FA1, which was banned by the London High Court on 31 July 1978 after a legal protest from the Shadow team on th ...

, a 1978 British racing car *

Audi A1 The Audi A1 (internally designated ''Typ 8X'') is a supermini car launched by Audi at the 2010 Geneva Motor Show. Sales of the initial three-door A1 model started in Germany in August 2010, with the United Kingdom following in November 2010. A ...

, a supermini automobile produced from 2010 *

Audi Quattro A1 The Audi Quattro is a road and rally car, produced by the German automobile manufacturer Audi, part of the Volkswagen Group. It was first shown at the 1980 Geneva Motor Show on 3 March. Production continued through 1991. Background The word ...

, a 1983 rally car *

Chery A1 The Chery A1 is a supermini car produced by the Chinese manufacturer Chery from 2007 to 2015. Engines and equipment Engines It was available with a 1.3-litre Acteco SQR473F engine, that has double overhead camshafts and 4 valves per cylinder, g ...

Scania A1 Maskinfabriks-aktiebolaget Scania (''Maskinfabriks AB Scania''), translates ''Machine Factory Limited Company Scania'', was a Swedish bicycle manufacturer established in Malmö in 1900. The company rapidly expanded to manufacture other products lik ...

, a 1901 car *

Toyota A1 The A1 was the first prototype passenger car built by the company that became Toyota. It was redesigned and put into production as Toyota's first production cars, the AA sedan and the AB cabriolet. These were succeeded by the similar AE, AC and B ...

, a 1935 car prototype * A1 registration plate, a UK vehicle registration plate * A1, a

Volkswagen Group A platform The Volkswagen Group A platform is an automobile platform shared among compact and mid-size cars of the Volkswagen Group. It debuted in 1974 and was originally based on the engineering concept of the Volkswagen Golf Mk1, and is applicable to eit ...

* A-1, a 1939

Buick Roadmaster The Buick Roadmaster is an automobile that was built by Buick from 1936 until 1942, from 1946 until 1958, and then again from 1991 until 1996. Roadmasters produced between 1936 and 1958 were built on Buick's longest non-limousine wheelbase and sh ...

Series 81C used by Norwegian royalty

Maritime

* A1 (shipping), a symbol indicating shipbuilding quality * Sea Area A1, a designation in the

Global Maritime Distress Safety System The Global Maritime Distress and Safety System (GMDSS) is a worldwide system for automated emergency signal communication for ships at sea developed by the United Nations' International Maritime Organization (IMO) as part of the SOLAS Conventio ...

Surface vessels

A-1 lifeboat The A-1 lifeboat was a powered lifeboat that was made to be dropped by fixed-wing aircraft into water to aid in air-sea rescue operations. The sturdy airborne lifeboat was to be carried by a heavy bomber specially modified to handle the external l ...

* , 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 The , also called were a trio of aircraft-carrying cruiser submarines built for the Imperial Japanese Navy (IJN) during the 1930s. All three participated in the Pacific War and were lost. Design and description The submarines of the A1 type were ...

, a type of Japanese Navy submarine * , a Royal Norwegian Navy submarine

Motorcycles

* A1, a

Haden (motorcycle) A.H. Haden Motorcycles was a British motorcycle marque from Birmingham. Haden was originally a bicycle-making business in Hockley, Birmingham, begun in the late 1880s, after the safety bicycle was introduced. The business passed from George ...

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 man ...

motorcycle * A-1, a 1976

Alligator (motorcycle) The Alligator is a feet forwards motorcycle built by Dan Gurney Alligator Motorcycle Company which is the motorcycle division of the former driver/racing team owner's All American Racers workshop in Santa Ana, California. Although not the first o ...

* Automatic A1, a

Tomos Tomos ( sl, link=yes, Tovarna, Motorjev, Sežana, "Motorcycle Company Sežana") was a moped manufacturer based in Koper, Slovenia. It was founded in 1948. Tomos acquired a production license from Puch to produce moped models under the Tomos name ...

motorcycle * A1 Samurai, see

List of Kawasaki motorcycles This is a list of Kawasaki motorcycles designed and/or manufactured by Kawasaki Heavy Industries Motorcycle & Engine and its predecessors. Special purpose * Kawasaki police motorcycles Cruiser * Vulcan 2000 * Kawasaki Vulcan 1700 Classic/Classi ...

Roads

* Highways designated ''A1'' in several countries; see

Spacecraft

Satellites

* A-001, the second abort test of the Apollo spacecraft *

Anik A1 Anik may refer to: * Anik (satellite), satellites launched by Canadian telecommunications company Telesat * Anik, Iran, a village in South Khorasan Province, Iran * Anik Mountain * Anik Bissonnette, a Canadian ballet dancer * Anik Jean (born 1977) ...

, a Canadian satellite *

Aussat (Optus) A1 This is a list of the satellites operated by Optus, an Australian telecommunications company. The satellite communications facility is located at Belrose on Sydney's Northern Beaches. Optus' satellites are divided into 4 classes A, B, C and D. As ...

, a 1985 Australian telecommunications satellite *

Orbcomm A1 Orbcomm is a family of low Earth orbit communications satellites, operated by the United States satellite communications company Orbcomm. , 51 such satellites have orbited Earth, with 50 still continuing to do so. Satellite types Orbcomm-CD ...

, a 1997 American low Earth orbit communications satellite *

Palapa A1 Palapa is a series of Communications satellites owned by Indosat, an Indonesian telecommunications company (formerly by Telkom Indonesia, Perumtel and then by PT Satelit Palapa Indonesia/Satelindo). Starting with the first in July 1976, at ...

, 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 Project Hermes was a missile research program run by the Ordnance Corps of the United States Army from November 15, 1944, to December 31, 1954, in response to Germany's rocket attacks in Europe during World War II. The program was to determine ...

* Saturn A-1, a 1959 American rocket *

Scout A-1 The Scout family of rockets were American launch vehicles designed to place small satellites into orbit around the Earth. The Scout multistage rocket was the first orbital launch vehicle to be entirely composed of Solid rocket, solid fuel stages. ...

, 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 The A1 Steam Locomotive Trust is a Darlington, England based charitable trust formed in 1990 for the primary purpose of completing the next stage of the locomotive heritage movement, the building of a new steam locomotive from scratch (i.e. not ...

, a charitable trust *

Ayrshire Bus Owners (A1 Service) Ayrshire Bus Owners (A1 Service) Ltd was a prominent independent co-operative bus operator in Ayrshire, Scotland. Based in Ardrossan, it provided local bus services around the towns of Ardrossan, Saltcoats, Stevenston, Kilwinning, Irvine and Dr ...

, a bus operator in Scotland *

Bavarian A I Bavarian A I engines were German steam locomotives in service with the Royal Bavarian State Railways (''Königlich Bayerische Staatsbahn'') from 1841 to 1871. Three manufacturers were awarded a contract to build eight locomotives each, with the ...

, an 1844 German steam locomotive model *

LB&SCR A1 class The London, Brighton and South Coast Railway (LB&SCR) A1 class is a class of British steam locomotive. Designed by William Stroudley, 50 members of the class were built in 1872 and between 1874 and 1880, all at Brighton Works. The class has rec ...

, a class of locomotives designed by Stroudley and known as the ''Terriers'' *

LNER Gresley Classes A1 and A3 The London and North Eastern Railway LNER Gresley Classes A1 and A3 locomotives represented two distinct stages in the history of the British "Pacific" steam locomotives designed by Nigel Gresley. They were designed for main line passenger ...

, a locomotive class designed by Sir Nigel Gresley, including the ''Flying Scotsman'' *

LNER Thompson Class A1/1 The LNER Class A1/1 consisted of a single 4-6-2 "Pacific" express passenger locomotive rebuilt in 1945 from an A1 class locomotive, by Edward Thompson. It was intended as the prototype of a new design of pacific locomotives improving the A4 d ...

, 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 BNCR Class A, Class A two-cylinder compound locomotives. They operated services throughout the NCC’s broa ...

, a 1901 Irish 4-4-0 passenger steam locomotives * Nishi-magome Station, a Japanese subway station *

PRR A1 The Pennsylvania Railroad (PRR) class A1 was a class of 0-4-0 type steam locomotives. History The class A1 was built from 1886 to 1892, when 0-4-0s were being used by other railroads. In time, larger 0-6-0 Under the Whyte notation for the cla ...

, an American PRR steam locomotive * Prussian A 1, 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 The Tel Aviv–Jerusalem railway (also higher-speed railway to Jerusalem, Plan A1, and Railway 29) is a railway line connecting the city of Tel Aviv in Israel with Jerusalem. The line serves as the main rail link between Tel Aviv and Jerus ...

, built on the “A1 Route” * Type A1 or ''California combination'', an Electric tram type *

0-2-2 An 0-2-2, in the Whyte notation for the classification of steam locomotives by wheel arrangement, is one that has two coupled driving wheels followed by two trailing wheels, with no leading wheels. The configuration was briefly built by Robert St ...

, the UIC classification for the Whyte notation of locomotive wheel arrangements

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