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 Line S5 (Chengdu Metro), China Line S5 (Chongqing Suburban Railway), China Line S5 (Nanjing Metro), China Line S5 (Milan suburban railway service), Italy 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