A1
A1 , A 1 or A-1 stands for:
- an address in the Mannheim A-squares
- a standardized paper format (DIN 476 / ISO 216), see paper format
- a railway line in Hamburg and Schleswig-Holstein, see AKN Eisenbahn #Streckennetz
- the driving license class for light motorcycles up to 125 cm³, see driving license
- Jet fuel A-1, see kerosene
- NGC 3603 A1 , so far the only known star with more than 100 solar masses, see NGC 3603
- a type of modulation for amplitude modulation, see amplitude modulation # Abbreviations
- a variant of the blood group allele A in the AB0 blood group system, see AB0 system
- a level of difficulty in technical climbing, see difficulty scale (climbing) #Technical climbing
- a grade for civil servants in Germany, see Simple service
- a level of the Common European Framework of Reference for Languages, see Common European Framework of Reference for Languages
- A1 , sea area in the GMDSS, see Global Maritime Distress and Safety System # Sea areas A1 to A4
- an obsolete Identification of the primary auditory cortex , meanwhile, as Core designated
- a class for the transfer speed of SD cards
- The posting certificate A1 in social security law
Companies, organizations, products:
- A1 (band) , a British boy band
- A-1 (music distributor) , a former US record distributor owned by Art Rupe
- Bregenz Handball , Austrian handball club
- A1 Ethniki , Greek basketball championship
- A1GP , former formula car racing series
- A1Plus Filmproduktion , manufacturer of television and other film productions
- A1 Steam Locomotive Trust , an association for a museum railway
- A1 Steak Sauce , a steak sauce especially known in English-speaking countries
- A1 Telekom Austria Group ( A1 ), Austrian telecommunications company including its country-specific subsidiaries
- A1 publishing house , Munich publishing house
- Unit 1 , a rocket project in the Third Reich
- AMX International AMX , aircraft, in the Brazilian Army A-1
- Antonov A-1 , Soviet aircraft
- Audi A1 , small car from Audi
- AVM A1-Card , the product name of the Berlin company AVM GmbH for an ISDN card
- Curtiss A-1 , American amphibious aircraft
- Douglas A-1 , American fighter-bomber
- L1 A1 , a British self-loading rifle
- L1 A1 (grenade launcher) , a simply constructed military weapon for firing grenades
- LNER class A1 Peppercorn , a British steam locomotive series
- Merzario A1 , a Formula 1 racing car from the Italian team, Team Merzario (1978)
Motorways and trunk roads:
- Bundesautobahn 1 in Germany
- West Autobahn in Austria
- Motorway 1 (Switzerland) in Switzerland
- Ring Road (Afghanistan) in Afghanistan
- Autostrada A1 (Albania) in Albania
- Avenida General Paz in Argentina
- Highway 1 (Algeria) in Algeria
- Motorway 1 (Belgium) in Belgium
- A1 (Bosnia and Herzegovina) in Bosnia and Herzegovina
- A1 (Botswana) in Botswana
- Awtomagistrala Trakija in Bulgaria
- A1 (Ivory Coast) in Ivory Coast
- Autoroute A1 in France
- Aftokinitodromos 1 in Greece
- Autostrada A1 (Italy) in Italy
- A1 (Kazakhstan) in Kazakhstan
- A1 (Kenya) in Kenya
- Autocesta A1 in Croatia
- Autoceļš A1 in Latvia
- List of trunk roads in Lithuania in Lithuania
- Autoroute 1 (Luxembourg) in Luxembourg
- A1 motorway (Namibia) in Namibia
- Rijksweg 1 in the Netherlands
- A1 (Nigeria) in Nigeria
- Autostrada A1 (Poland) in Poland
- Autoestrada A1 in Portugal
- Autostrada A1 (Romania) in Romania
- Autoput A1 in Serbia
- Avtocesta A1 in Slovenia
- Autovía A-1 in Spain
- A1 road in the UK
- A1 (Cyprus)
a 1 , a 1 stands for:
- the note a in the dashed octave, see concert pitch
α1 or α-1 stands for:
- α1 adrenoceptor , a protein-coupled receptor
- α-1-antitrypsin , an acute phase protein
Map with all linked sites: