S81 may refer to:
Aviation
*
Blériot-SPAD S.81, a French fighter aircraft
*
Indian Creek USFS Airport
Indian Creek USFS Airport is a public use airport located at Indian Creek in Valley County, Idaho, United States. It is owned by the U.S. Forest Service. The airstrip is situated next to the Middle Fork Salmon River.
Facilities and aircraft
I ...
, in Valley County, Idaho, United States
*
Short S.81, an experimental British biplane seaplane
Other uses
*
S81 (New York City bus)
The S51 and S81 constitute bus routes in Staten Island, New York running primarily on Bay Street, Father Capodanno Boulevard, and Midland Avenue, between St. George Ferry Terminal and Grant City.
The S51 was originally a streetcar route, that wa ...
serving Staten Island
*
County Route S81 (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 ...
*
Daihatsu Hijet (S81)
The is a cab over microvan and kei truck produced and sold by the Japanese automaker Daihatsu since 1960. Despite the similarities between the Hijet name and Toyota's naming scheme for its trucks and vans ( HiAce and Hilux), the name "Hijet" h ...
, a kei truck and microvan
* , a
S-80 Plus class submarine
*
Stola S81 Stratos
Stola is an Italian automotive company founded in 1919. From its start it realized concept cars, prototypes and style models, master models and engineering consultancy for some of the biggest manufacturers in the automotive industry.
In 2004 it ...
, a concept car
* S81, a
line of the St. Gallen S-Bahn
* S81, a
postcode district for Worksop, England
* BenQ-Siemens S81, a
BenQ mobile phone
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