S34
# S34

S34 may refer to:

## Aviation

* Blériot-SPAD S.34, a French biplane
* Plains Airport, in Sanders County, Montana, United States
* Sikorsky S-34, an American sesquiplane
* Skyfly S-34 Skystar, a Swiss ultralight

## Naval vessels

* Brazilian submarine Tikuna (S34)
* SMS S34 (1914), a torpedo boat of the Imperial German Navy
* Spanish submarine Cosme García (S34)
* USS S-34 (SS-139), a submarine of the United States Navy

## Other uses

* County Route S34 (California)
* Sulfur-34, an isotope of sulfur
