S7 or S-7 may refer to: Electronics and software Acer Aspire S7, a laptop Samsung Galaxy S7, a smartphone Samsung Galaxy Tab S7, a tablet computer , an automation system based on Programmable Logic Controller from Siemens, successor to Simatic S5 PLC Sub7, a computer backdoor Media Sovereign Seven, a superhero team and comic book published by DC Comics in 1995–1998 Samurai 7, a 2004 anime series Science and technology 7-sphere (S7), an n-sphere Heptasulfur (S7), a cyclic allotrope of sulfur S7 or S-7, a grade of tool steel S7: Keep container tightly closed, a safety phrase in chemistry Transportation Air Ambrosini S.7, an Italian racing aircraft flown before World War II Rans S-7 Courier, a light aircraft S7 Airlines, a Russian commercial airliner, its IATA Airlines code is also S7 Automobiles Audi S7, a German executive sports sedan BYD S7, a Chinese mid-size SUV formerly known as S6 Haima S7, a Chinese compact SUV Huansu S7, a Chinese mid-size SUV JAC Refine S7, a Chinese mid-size SUV Saleen S7, an American supercar Motorcycles Sunbeam S7, a British motorcycle Rail Trains London Underground S7 Stock, a type of train on London Underground, England Prussian S 7, a Prussian steam locomotives class Lines S7 (Vienna), an S-Bahn line in Austria S7 (Berlin), an S-Bahn line in Germany S7 (Munich), an S-Bahn line in Germany S7 (Rhine-Main S-Bahn), an S-Bahn line in Germany S7 (Rhine-Ruhr S-Bahn), an S-Bahn line in Germany S7 (St. Gallen S-Bahn), an S-Bahn line in Switzerland S7 (ZVV), an S-Bahn line in Zürich, Switzerland Capital Airport–Daxing Airport intercity railway, or Line S7, Beijing, China Line S7 (Nanjing Metro), China Roads and routes County Route S7 (California) Expressway S7 (Poland) Watercraft HMS Sealion (S07), a 1959 British Porpoise-class submarine USS S-7 (SS-112), a 1920 S-class submarine of the United States Navy Other uses S7 (classification), a disability swimming classification S7 postcode, a postcode covering areas of southern Sheffield, England British NVC community S7, a swamps and tall-herb fens community in the British National Vegetation Classification system