A1
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 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
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 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

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 filmCompaniesA1 Film Company, a Burmese cinema company
A-1 Pictures, 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, 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
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
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 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, 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 and government
Americas
A-1 visa, 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
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 (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
"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
Primary auditory cortex, 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 in the Comstock-Needham system of insect wing vein naming
Noradrenergic cell group A1
A1, a mating type of Phytophthora infestans, the cause of potato blight

Earth sciences
A1, a landslide classification 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
A1, the alternating group on a set with one only element

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
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 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 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 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
Samsung Galaxy A01, a smartphone released in 2020

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

Cars
A1, a tyre code
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
A-1, a 1939 Buick Roadmaster 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

Surface vessels
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

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

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 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, a class of Pacific locomotives designed by Arthur 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
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

See also
1A (disambiguation)
A-1 Yola (disambiguation)
AL (disambiguation)
Aleph One (disambiguation)
A10 (disambiguation)
All pages with titles containing A1