S33
# S33

S33 may refer to:

## Aviation

* Blériot-SPAD S.33, a French airliner
* Letov Š-33, a Czechoslovak bomber
* Madras Municipal Airport, in Jefferson County, Oregon, United States
* Short S.33, a British flying boat
* Sikorsky S-33 Messenger, an American sesquiplane
* Spectrum S-33 Independence, an American business jet

## Naval vessels

* Brazilian submarine Tapajó (S-33)
* SMS S33 (1914), a torpedo boat of the Imperial German Navy
* Spanish submarine Narcíso Monturiol (S33)
* USS S-33 (SS-138), a submarine of the United States Navy

## Other uses

* S33 (Long Island bus)
* S33 (ZVV), a line of the Zürich S-Bahn
* County Route S33 (Bergen County, New Jersey)
* S33: Take precautionary measures against static discharges, a safety phrase
* Section 33 of the Canadian Charter of Rights and Freedoms
* Sotho language
* Sulfur-33, an isotope of sulfur
* S33, a postcode district in the Hope Valley, Derbyshire, England
