S34 may refer to:
Aviation
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Blériot-SPAD S.34
The Blériot-SPAD S.34 was a French twin-seat, single-engine biplane flight training aircraft designed in 1920. The side-by-side seating arrangement was unique for its time. 150 aircraft were built, 125 for the French Air Force, who used them un ...
, a French biplane
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Plains Airport, in Sanders County, Montana, United States
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Sikorsky S-34
The Sikorsky S-34 was a 1920s American six-seat sesquiplane, designed and built by the Sikorsky Manufacturing Corporation. Only one was built, but the design led to the successful Sikorsky S-38
The Sikorsky S-38 was an American twin-engined ...
, an American sesquiplane
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Skyfly S-34 Skystar
The Skyfly S-34 Skystar is a Swiss ultralight aircraft, designed by Hans Gygax and produced by Skyfly, of Altbüron. The aircraft is supplied as a kit for amateur construction or as a complete ready-to-fly-aircraft.Bayerl, Robby; Martin Be ...
, a Swiss ultralight
Naval vessels
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* , a torpedo boat of the Imperial German Navy
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* , a submarine of the United States Navy
Other uses
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County Route S34 (California)
There are 34 routes assigned to the "S" zone of the California Route Marker Program, which designates county routes in California. The "S" zone includes county highways in Imperial, Orange, Riverside, San Diego, and Santa Barbara counties.
S ...
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Sulfur-34, an isotope of sulfur
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