S1, S01, S.I, S-1, S.1, Š-1 or S 1 may refer to:

Biology and chemistry

  • S1 nuclease, an enzyme that digests singled-stranded DNA and RNA
  • S1: Keep locked up, a safety phrase in chemistry
  • Primary somatosensory cortex, also known as S1
  • Tegafur/gimeracil/oteracil, also known as S-1, a chemotherapy medication

Entertainment

  • S1 (Indian TV channel), a Hindi-language channel
  • S1 (Swiss TV channel), a German-language channel
  • S1 (producer), a hip hop producer, member of the group Strange Fruit Project
  • S1 No. 1 Style, a Japanese adult video company
  • Gibson S-1, a guitar made by the Gibson Guitar Corporation
  • A member of the S1W (group) that later became part of the music group Public Enemy.

Government

  • Bill S-1, a pro forma bill in Canadian Parliament
  • Form S-1, a U.S. Securities and Exchange Commission filing
  • S-1 Executive Committee, a United States government entity during World War II
  • S1 (military), an administrative position within military units

Technology

  • ACPI S1 power state, in computing; see
  • Apple S1, integrated computer used in the Apple Watch
  • Canon PowerShot S1 IS, a 2004 3.2 megapixel digital camera
  • FinePix S1 Pro, a 2000 interchangeable lens digital single-lens reflex camera by Fujifilm
  • Nikon Coolpix S1, a digital camera
  • Nikon 1 S1, mirrorless interchangeable lens camera
  • S1 Corporation, an American software development company
  • S1 Core, a microprocessor-core
  • S1 MP3 Player
  • Samsung Galaxy S (2010 smartphone)
  • Sendo S1, a Sendo mobile phone model
  • Siemens S1, a Siemens mobile phone
  • Sony BDP-S1, a first generation Blu-ray Disc (BD) Player
  • S1, an EPC in an LTE/4G network

Transportation

Routes

Austria

  • S1 (Vienna), an S-Bahn line
  • S1, a line of the Carinthia S-Bahn
  • S1, a line of the Salzburg S-Bahn
  • S1, a line of the Styria S-Bahn
  • S1, a line of the Tyrol S-Bahn
  • S1, a line of the Upper Austria S-Bahn
  • S1, a line of the Vorarlberg S-Bahn

China

  • Line S1 (Beijing Subway)
  • Line S1 (Guiyang Metro)
  • Line S1 (Hefei Metro)
  • Line S1 (Nanjing Metro)
  • Line S1 (Taizhou Rail Transit)
  • Line S1 (Wenzhou Rail Transit)
  • Line S1 (Wuxi Metro)
  • S1 Yingbin Expressway in Shanghai

Germany

  • S1 (Berlin), an S-Bahn line
  • S1 (Dresden), an S-Bahn line
  • S1 (Munich), an S-Bahn line
  • S1 (Nuremberg), an S-Bahn line
  • S1 (Rhine-Main S-Bahn), an S-Bahn line
  • S1 (Rhine-Ruhr S-Bahn), an S-Bahn line
  • S1 (Stuttgart), an S-Bahn line
  • S1, a Breisgau S-Bahn line
  • S1, a planned Bremen S-Bahn line
  • S1, a Hamburg S-Bahn line
  • S1, a Hanover S-Bahn line
  • S1, a RheinNeckar S-Bahn line
  • S1, a Rostock S-Bahn line
  • S1, a Stadtbahn Karlsruhe line

Italy

  • S1a, a Bologna metropolitan railway service
  • S1b, a Bologna metropolitan railway service
  • Line S1 (Milan suburban railway service)

Switzerland

  • S1 (Bern S-Bahn), an S-Bahn line in the canton of Bern
  • S1 (RER Vaud), an S-Bahn line in the canton of Vaud
  • S1 (St. Gallen S-Bahn), an S-Bahn line in the cantons of Schaffhausen, St. Gallen, Thurgau and Zurich
  • S1 (ZVV), now subsumed by S24, a Zurich S-Bahn line
  • S1, a line of the Basel S-Bahn
  • S1, a line of the Chur S-Bahn
  • S1, a line of the Lucerne S-Bahn
  • S1, a line of the Zug Stadtbahn

United States

  • County Route S1 (California)
  • S1 (Long Island bus)

Other countries

  • S-1 Strategic Highway, Pakistan
  • Expressway S1 (Poland)
  • FGC line S1, a suburban train line in Barcelona Province
  • Stagecoach Gold bus route S1, in Oxfordshire, England, UK

Vehicles

Aircraft

  • Blackburn Buccaneer S.1 jet naval strike aircraft
  • Focke-Wulf S 1, a German Focke-Wulf aircraft
  • Fokker S.I, a 1919 Dutch primary trainer aircraft
  • Hopfner S-1, a Hopfner aircraft
  • Letov S-1, a 1920 Czechoslovak surveillance aircraft
  • Loening S-1, a United States Army Air Service seaplane
  • Loughead S-1 Sport 1920 US biplane
  • Martinsyde S.1, a 1914 British biplane aircraft
  • Pantsir-S1, a Russian anti-aircraft system
  • Pitts S-1 aerobatic biplane
  • S-1 Loening, a United States Army Air Service seaplane
  • SSBS S1, a French experimental rocket
  • Swift S-1, a 1991 Polish single seat aerobatic glider

Cars

  • AS S1, a 1927 car manufactured in Poland
  • Audi S1, performance variant of Audi A1
  • Invicta S1, a 2004 sports car
  • Leapmotor S01, an all-electric car
  • S1 Scout Car, an armoured car built in Australia during the Second World War
  • Superformance S1 Roadster, a Lotus Seven Type replicar produced in South Africa 2001–2004
  • Saleen S1, an American sports car

Other vehicles

  • Alco S-1, a locomotive
  • PRR S1, a duplex locomotive developed by the Pennsylvania Railroad
  • LNER Class S1, a class of British steam locomotives
  • NER Class S1, a class of British steam locomotives
  • USS S-1 (SS-105), a 1918 United States Navy experimental submarine

Other uses

  • S1 (classification), a disability swimming classification
  • S postcode area covering Sheffield City Centre
  • in human anatomy:

:* the first sacral vertebra

:* the sacral spinal nerve 1 of the vertebral column

:* the primary somatosensory cortex in the brain

  • Senior 1, the First Year in the Scottish secondary education system
  • Season (television) or series one
  • Comet Ikeya–Seki, C/1965 S1
  • Upplands regemente (signal), a 1902 Signal Regiment of the Swedish Armed Forces

With superscripts and subscripts

S<sub>1</sub> may refer to:

  • S1 (heart sound), a heart sound in cardiac auscultation

S<sup>1</sup> may refer to:

  • S<sup>1</sup>, the n-sphere in two dimensions i.e. a circle
  • Inverse second (s<sup>&minus;1</sup>), a unit of frequency

S01

S01 may refer to:

  • Akai S01, an Akai synthesizer
  • ATC code S01 Ophthalmologicals, a subgroup of the Anatomical Therapeutic Chemical Classification System
  • HMS Porpoise (S01), a 1956 Porpoise-class submarine of the Royal Navy
  • MULTI-S01, an encryption algorithm based on a pseudorandom number generator

See also

  • 1S (disambiguation)