S40

S40 may refer to:

Aircraft

 * SABCA S.40, a Belgian trainer aircraft
 * Sikorsky S-40, an American amphibious flying boat
 * Spectrum S-40 Freedom, an American business jet

Automobiles

 * Suzuki Boulevard S40, a Japanese motorcycle
 * Toyota Crown (S40), a Japanese luxury car
 * Volvo S40, a Swedish automobile

Electronics

 * Canon PowerShot S40, a digital camera
 * IBM NetVista S40, a personal computer
 * Series 40, a software platform used in Nokia cell phones
 * Siemens S40, a mobile phone

Rail and transit

 * S40 (New York City bus)
 * S40 (TILO), a regional rail line in Ticino, Switzerland
 * S40 (ZVV), a line of the Zürich S-Bahn in Switzerland

Roads

 * County Route S40 (Bergen County, New Jersey)
 * New Jersey Route 72, designated Route S40 until 1953

Submarines

 * BRAZILIAN SUBMARINE Riachuelo
 * HMS Upholder (S40), a submarine of the Royal Navy
 * INS Vela (S40), a submarine of the Indian Navy
 * USS S-40 (SS-145), a submarine of the United States Navy

Other uses

 * S40 Racing, a 1997 freeware game
 * S40: To clean the floor and all objects contaminated by this material use ... (to be specified by the manufacturer), a safety phrase
 * Somua S40, a prototype French tank
 * Sulfur-40, an isotope of sulfur
 * S40, a postcode district in Chesterfield, England