S31 may refer to:
Aviation
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Blériot-SPAD S.31, a French racing aircraft
*
Letov Š-31 __NOTOC__
The Letov Š-31 was a fighter aircraft produced in Czechoslovakia in the early 1930s in a number of variants. All of the aircraft had metal tubular framing and fabric covering with a metal engine cowling.
The first flight of the defini ...
, a Czechoslovakian fighter aircraft
*
Lopez Island Airport
Lopez Island Airport is a public use airport located three nautical miles (6 km) south of the central business district of Lopez, a village on Lopez Island in San Juan County, Washington, United States. It is owned by the Port of Lopez.
...
, in San Juan County, Washington, United States
*
Short S.31, a British bomber prototype
*
Sikorsky S-31 __NOTOC__
The Sikorsky S-31 was a 1920s American sesquiplane designed and built by the Sikorsky Manufacturing Corporation and configured for aerial photography.
Design and development
The S-31 was a sesquiplane built for photographic work by the ...
, an American sesquiplane
Naval vessels
* , a submarine of the Argentine Navy
*
* , a submarine of the Royal Navy
* , a torpedo boat of the Imperial German Navy
*
* , a submarine of the United States Navy
Rail and transit
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S31 (Long Island bus)
Suffolk County Transit operates a number of bus routes in Suffolk County, New York, United States; a few in the town of Huntington are operated by Huntington Area Rapid Transit. The Villages of Patchogue and Port Jefferson, also have had their o ...
*
Warabitai Station
was a railway station in Oshamambe, Hokkaido, Japan, operated by the Hokkaido Railway Company (JR Hokkaido). Opened in 1904, it closed in March 2017.
Lines
Warabitai Station was served by the Hakodate Main Line, and was situated 126.9 km fr ...
, a closed station in Oshamambe, Hokkaido, Japan
* S31, a
line of the Bern S-Bahn, in Switzerland
* S31, a
line of the Hamburg S-Bahn, in Germany
* S31, a
line of the Karlsruhe Stadtbahn, in Germany
Roads
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Mehran Highway
Mehran Highway ( sd, مِهِراڻ ُ هاءِوي, ur, , also known locally as Nawabshah–Kot Lalu–Kumb Road and officially as Highway 31) is a two-lane-wide, bidirectional, single carriageway, provincially maintained highway in Sindh t ...
, in Sindh, Pakistan
*
County Route S31 (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 ...
, United States
*
County Route S31 (Bergen County, New Jersey)
The following is a list of county routes in Bergen County in the U.S. state of New Jersey. For more information on the county route system in New Jersey as a whole, including its history, see County routes in New Jersey.
500-series county rout ...
, United States
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U.S. Route 206, partially numbered New Jersey Route S31 until 1953
Other uses
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Sulfur-31, an isotope of sulfur
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