S55 may refer to:
Aircraft
*
Savoia-Marchetti S.55, an Italian flying boat
*
Sikorsky S-55
The Sikorsky H-19 Chickasaw (company model number S-55) is a multi-purpose piston-engined helicopter that was used by the United States Army and United States Air Force. It was also license-built by Westland Aircraft as the Westland Whirlwin ...
, an American helicopter
*
Sukhoi S-55, a proposed Russian fighter aircraft
Automobiles
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BMW S55, an automobile engine
*
Mercedes-Benz S 55 AMG, a luxury car
*
Mercury S-55, an American full-size car
*
Shorland S55, a British armoured personnel carrier
Rail and transit
*
S55 (New York City bus) serving Staten Island, United States
*
S55 (ZVV), a former line of the Zurich S-Bahn in Switzerland
* S55, a former railway line in the canton of Thurgau, Switzerland, subsumed into the
S5 (St. Gallen S-Bahn)
* S55, a line of
Lucerne S-Bahn
The Lucerne S-Bahn () is an S-Bahn-style commuter rail network focusing on Lucerne in Central Switzerland.
Opened on 12 December 2004, the network forms part of the Central Switzerland S-Bahn project (), which also includes the Zug Stadtbahn (). ...
in Central Switzerland
*
FGC line S55, a suburban train line in Catalonia, Spain
Other uses
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S55 (star) in the constellation Sagittarius
*
Ariel 1
Ariel 1 (also known as UK-1 and S-55), was the first British-American satellite, and the first satellite in the Ariel programme. Its launch in 1962 made the United Kingdom the third country to operate a satellite, after the Soviet Union and the Un ...
, a British satellite
*
County Route S55 (Bergen County, New Jersey)
*
Explorer S-55 (satellite), a failed American spacecraft
* , a submarine of the Indian Navy
*
Siemens S55, a mobile phone
*
Wandandian language
The Dhurga language, also written Thurga, is an Australian Aboriginal language of New South Wales. It is a language of the Yuin people, specifically the Wandandian and Walbunja groups, but there have been no fluent speakers officially recorde ...
{{Letter-Number Combination Disambiguation