S15

S15 may refer to:

Aircraft

 * Sikorsky S-15, a protoype Russian biplane floatplane
 * Spalinger S.15, a Swiss glider
 * Stemme ASP S15, a German sailplane

Automobiles

 * GMC Jimmy (S-15), a SUV
 * Laffly S15, a family of French all-terrain military vehicles
 * Nissan Silvia (S15), a sports car

Lines

 * S15 (ZVV), an S-Bahn line in Zürich, Switzerland
 * Frauenfeld–Wil railway, an S-Bahn line in Switzerland
 * S15 (Berlin), planned line on S21 rail project

Locomotives

 * LSWR S15 class, a British steam locomotive

Stations

 * Hataki Station, in Ōzu, Ehime Prefecture, Japan
 * Ikawadani Station, in Nishi-ku, Kobe, Hyōgo Prefecture, Japan
 * Ojima Station, in Kōtō, Tokyo, Japan
 * Otaru Station, in Otaru, Hokkaido, Japan
 * Sakuragawa Station (Osaka), in Naniwa-ku, Osaka, Japan
 * Sakura-hommachi Station, in Minami-ku, Nagoya, Aichi, Japan

Science

 * 40S ribosomal protein S15
 * British NVC community S15, a swamps and tall-herb fens community in the British National Vegetation Classification system
 * Explorer 11, a NASA satellite
 * Ribosomal S15 leader
 * S15: Keep away from heat, a safety phrase

Vessels

 * BRAZILIAN SUBMARINE Goias
 * BRAZILIAN SUBMARINE Riachuelo
 * HMS Otter (S15), a submarine of the Royal Navy
 * SMS S15 (1912), a torpedo boat of the Imperial German Navy
 * USS S-15 (SS-120), a submarine of the United States Navy

Other uses

 * S15 (classification), a disability swimming classification
 * County Route S15 (California)