S63 may refer to:

Aviation

* Savoia-Marchetti S.63, an Italian flying boat *

Sikorsky S-63 The Sikorsky HH-52 Seaguard (company designation S-62) was an early amphibious helicopter designed and produced by the American helicopter manufacturer Sikorsky Aircraft. It was the first of the company's amphibious rotorcraft to fly. The S-6 ...

, an American helicopter *

Skyharbor Airport Skyharbor Airport was a privately owned, public-use airport in Dallas County, Alabama, United States. It was located five nautical miles (5.8 mi, 9.3 km) southwest of the central business district of Selma, Alabama. Since 2011, official FA ...

, in Dallas County, Alabama, United States

Other uses

* S-63 (encryption standard), securing electronic navigational chart data * S63 (Long Island bus), United States *

BMW S63 The BMW N63 is a twin-turbocharged V8 petrol engine which has been in production from 2008 to present. The N63 is the world's first production car engine to use a "hot-vee" layout, with the turbochargers located inside the "V" of the engine. It is ...

, an automobile engine * , a submarine of the Indian Navy *

Mercedes-Benz S63 AMG The Mercedes-Benz S-Class, formerly known as ''Sonderklasse'' (German for "special class", abbreviated as "S-Klasse"), is a series of full-sized luxury sedans, limousines and armored sedans produced by the German automaker Mercedes-Benz, a divis ...

, a German sedan * S63: In case of accident by inhalation: remove casualty to fresh air and keep at rest, a safety phrase * * S63, a postcode district for Rotherham, England {{Letter-NumberCombDisambig