S5 (St

S5 or S-5 may refer to:

Science

* Pentasulfur (S₅), an allotrope of sulfur
* S₅, the symmetric group on five elements
* S5: Keep contents under ... (appropriate liquid to be specified by the manufacturer), a safety phrase in chemistry
* Sacral spinal nerve 5, a spinal nerve of the sacral segment
* S5, the fifth sacral vertebra of the vertebral column, in human anatomy

Technology

Electronics

* Canon PowerShot S5 IS, a 2007 8.0 megapixel bridge digital camera
* Coolpix S5, a 6 Megapixels Nikon Coolpix series digital camera
* FinePix S5 Pro, a 2006 digital single lens reflex camera by Fujifilm
* Samsung Galaxy S5, an Android smartphone by Samsung
* Samsung Galaxy Tab S5e, an Android tablet
* Simatic S5 PLC, a programmable logic controller family by Siemens

Software

* S5 (file format), for defining slideshows
* ACPI S5 power state, of the Advanced Configuration and Power Interface in computing

Transportation

Airlines and airports

* Star Air (India) (IATA airline code: S5)
* Shuttle America (IATA airline code: S5)
* Trast Aero, (IATA airline code: S5)
* Bandon State Airport (FAA code: S05)
* Slovenia, International Aircraft Registration Prefixes (ICAO country code: S5)

Mass-transit lines

S-Bahn
* S5 (Berlin) in Germany
* S5 (Munich) in Germany
* S5 (Nuremberg) in Germany
* S5 (RER Vaud), an S-Bahn line in Switzerland
* S5 (Rhine-Main S-Bahn) in Germany
* S5 (Rhine-Ruhr S-Bahn) in Germany
* S5 (St. Gallen S-Bahn), an S-Bahn line in Switzerland
* S5 (ZVV), in the cantons of Zurich, St. Gallen and Schwyz in Switzerland
* S5, a Basel S-Bahn line located in Germany
* S5, a Breisgau S-Bahn line in Germany
* S5, a Carinthia S-Bahn line in Austria
* S5, a Hanover S-Bahn line in Germany
* S5, a Lucerne S-Bahn line in Switzerland
* S5, a Stuttgart S-Bahn line in Germany
* S5, a Styria S-Bahn line in Austria
* S5, an Upper Austria S-Bahn line in Austria

Other lines
* An alternate name for the Huairou–Miyun line in Beijing, China
* S5, a tram line part of the Stadtbahn Karlsruhe in Germany
* FGC line S5, a suburban train line in Barcelona Province, Spain

Roads

* County Route S5 (California), a county route in California, U.S.
* S5 Shanghai–Jiading Expressway in Shanghai, China
* Expressway S5, a Polish highway

Vehicles

Aircraft
* Rans S-5 Coyote, an ultralight aircraft
* Sikorsky S-5, Igor Sikorsky's first successful aircraft design
* Supermarine S.5, a 1920s British single-engine single-seater racing seaplane
Automobiles
* Audi S5, a German compact executive sports car
* BYD Song, a Chinese compact SUV known as the BYD S5 in Egypt
* Haima S5, a Chinese compact SUV
* Haima S5 Young, a Chinese subcompact SUV
* Huansu S5, a Chinese compact SUV
* JAC Refine S5, a Chinese compact SUV
* Luxgen S5, a Taiwanese compact sedan
* MGS5 EV, an electric compact SUV
Spacecraft
* Saturn V, a retired American space launch vehicle
Trains
* ALCO S-5, an American diesel switching (shunting) locomotive
* Prussian S 5, an 1894 steam locomotive class
Watercraft
* USS S-5 (SS-110), a 1919 S-class submarine of the United States Navy

Other uses

* S5 (modal logic), in logic and philosophy
* S-5 rocket
* S5 (band), an Indian pop band
* S5 (classification), a disability swimming classification
* British NVC community S5, a swamps and tall-herb fens community in the British National Vegetation Classification system
* Fifth year, in the Scottish education system
* S5, a public affairs officer within military units; see staff
* S5 postcode, in the S postcode area covering areas of northern Sheffield
* S-5 visa, a non-immigrant visa which allows travel to United States for individuals who are witnesses, informants

See also

* 5S (disambiguation)
* SysV, the UNIX System V

{{Letter-Number Combination Disambiguation