S5 or S-5 may refer to:

• 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

• 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

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

• 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)

S-Bahn

• S5 (Berlin)
• S5 (Munich)
• S5 (Nuremberg)
• S5 (RER Vaud), an S-Bahn line in Switzerland
• S5 (Rhine-Main S-Bahn)
• S5 (Rhine-Ruhr S-Bahn)
• S5 (St. Gallen S-Bahn), an S-Bahn line in Switzerland
• S5 (ZVV), in the cantons of Zürich, St. Gallen and Schwyz in Switzerland
• S5, a Hanover S-Bahn line
• S5, a Stuttgart S-Bahn line
• An alternate name for the Huairou–Miyun line in Beijing

Other lines

• S5, a Stadtbahn Karlsruhe line, Germany
• FGC line S5, a suburban train line in Barcelona Province, Spain

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

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-engined single-seat 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

Spacecraft

• Saturn V, the rocket used mostly in the Apollo program

Trains

• ALCO S-5, and American diesel switching (shunting) locomotive
• Prussian S 5, an 1894 steam locomotives class; see List of Prussian locomotives and railbuses

Watercraft

• USS S-5 (SS-110), a 1919 S-class submarine of the United States Navy

• 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

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

Topics referred to by the same term

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