S17 may refer to:
Aviation Rans S-17 Stinger, an American ultralight aircraft Saab 17, a Swedish reconnaissance aircraft Short S.17 Kent, a British flying boat airliner SIAI S.17, an Italian racing flying boat Sikorsky S-17, a Russian biplane Twin Lakes Airport (South Carolina), in Aiken County, South Carolina, United States
Rail and transit Funabori Station, in Edogawa, Tokyo, Japan Gorō Station, in Ōzu, Ehime Prefecture, Japan Nippombashi Station, in Chūō-ku, Osaka, Japan Nonami Station, in Tempaku-ku, Nagoya, Aichi Prefecture, Japan Ranshima Station, in Otaru, Hokkaido, Japan S17 (St. Gallen S-Bahn), of the St. Gallen S-Bahn in Switzerland S17 (ZVV), a designation of the Wohlen–Dietikon railway line, of the Zürich S-Bahn in Switzerland
Roads S17 Baicheng Ring Expressway, China Expressway S17 (Poland) County Route S17 (California), United States
Vessels
, a submarine of the Royal Navy , a torpedo boat of the Imperial German Navy , a submarine of the United States Navy
Other uses 40S ribosomal protein S17 British NVC community S17, a swamps and tall-herb fens community in the British National Vegetation Classification system S17: Keep away from combustible material, a safety phrase S17, a postcode district in Sheffield, England