# STS

STS, or sts, may refer to:

## Medicine

* Secondary traumatic stress, a condition which leads to a diminished ability to empathize
* Sequence-tagged site, a gene-reference in genomics
* Soft-tissue sarcoma
* Staurosporine, an antibiotic
* STS (gene), which codes for steroid sulfatase
* Superior temporal sulcus
* Sinus tarsi syndrome, a foot condition

## Places

* Semipalatinsk Test Site for Soviet nuclear weapons
* Staffordshire, county in England, Chapman code

## Transport

* Cadillac STS, a luxury car
* NASA Space Transportation System, the system in which the NASA shuttle is part of and only surviving component of; starting as a 1969 NASA proposal system for reusable space vehicles
** NASA Space Shuttle program, the shuttle program itself, whose mission were referred to with STS-numbering
* Sail training ship, a ship prefix
* Satellite Transit System, now called the SEA Underground, airport transit in Seattle-Tacoma International Airport
* Ship-to-ship transfer, between seagoing ships
* Société de transport de Sherbrooke, a public bus system in Sherbrooke, Quebec, Canada
* Société de transport du Saguenay, a public bus system in Saguenay, Quebec, Canada
* STS Group (Dubai), a transportation company for private schools
* Sonar Technician Submarine, a US Navy rating
* STS, the IATA airport code for Charles M. Schulz - Sonoma County Airport
* STS, the National Rail code for Saltash railway station, Cornwall, UK

## Science and technology

* Space Tourism Society
* Scanning tunneling spectroscopy
* Science and technology studies, a.k.a. science, technology, and society
* Sociotechnical system
* Special treatment steel, used by the US Navy c.1910
* Static transfer switch, a semiconductor switch
* STS 5 an Australopithecus specimen
* Suomenkielisten teknikkojen seura, now incorporated into Academic Engineers and Architects in Finland TEK

## Computing and communications

* HTTP Strict Transport Security
* Security token service, a web service
* Set Transmit State, hex 93 in the C1 set of control codes
* Spring Tool Suite, IDE for Spring Framework
* Station-to-Station protocol, a cryptographic key agreement scheme
* Synergy Teleconferencing System, a PC-based chat server
* Serviciul de Telecomunicații Speciale, the Romanian special telecommunication service
* STS Relay, US speech to speech relay service for people with a speech disability
* STS (TV channel), Russia
* Synchronous transport signal, in synchronous optical networking
* Saga Television Station, a Japanese commercial broadcaster

## Culture

* Satanas, a Filipino-American gang
* Stepover toehold sleeper, a wrestling hold
* S.T.S. (band), an Austropop band

## Societies, organizations and companies

* Scottish Tartans Society, a defunct Scottish society
* Sisu Terminal Systems, a former terminal tractor producer
* Society of the Holy Trinity (Societas Trinitatis Sanctae – STS), Lutheran ministerium
* Suomen Työväen Säästöpankki, a defunct Finnish commercial bank
* Hitachi Rail STS, formerly known as Ansaldo STS, a company specializing in railway signalling and control systems

## Other uses

* Saints, the plural of Saint, for example: Sts. Peter and Paul
* Short-term business statistics
* Strathcona-Tweedsmuir School, Alberta, Canada
* Susquehannock Trail System, Pennsylvania, US