S38
# S38

S38 may refer to:

* BMW S38, an automobile engine
* S38: In case of insufficient ventilation wear suitable respiratory equipment, a safety phrase
* Short S.38, a British biplane
* Sikorsky S-38, a 1928 American amphibious sesquiplane
* Sulfur-38, an isotope of sulfur
* USS S-38 (SS-143), a submarine of the United States Navy
