

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| SSR | Station Set Requirement | In English | |
| SSR | System Safety Review | In English | → Accidents, risks, safety | 
| SSR | System Status Review | In English | |
| SSR | Service de Santé de la Résistance | In French | → Medicine → 93 | 
| SSR | Society for the Study of Reproduction | In English | → Organizations and associations → 6188 | 
| SSRA | Stakeholders Strategic Research Agenda | In English | |
| SSRB | Sovet Sosialistik Republiklar Berlege = URSS | Unaniezh ar Republikoù Sokialour Soviedel | In Breton = URSS | Union des Républiques Socialistes Soviétiques | In French = USSR | Unie van Sosialistiese Sowjetrepublieke | In Afrikaans = USSR | Union of Soviet Socialist Republics | In English = СССР | Сою́з Сове́тских Социалисти́ческих Респу́блик | In Russian = CCCP | Съюзът на съветските социалистически републики | In Bulgarian = SSSR | Soyuz Sovetskikh Sotsialisticheskikh Respublik | In Russian = URSS | Unión de Republicas Sozialistas Sobieticas | In Aragonese = XRSS | Xunión de les Repúbliques Socialistes Soviétiques | In Asturian = SSRİ | Sovet Sosialist Respublikaları İttifaqı | In Azerbaijani = TSRS | Tarybu Socialistiniu Respubliku Sajunga | In Baltic languages = SSSR | Savez Sovjetskih Socijalističkih Republika | In Serbo-Croatian = URSS | Unió de Repúbliques Socialistes Soviètiques | In Catalan = SSSR | Svaz sovětských socialistických republik | In Czech = USSR | Unio de Sovetaj Socialismaj Respublikoj | In Esperanto = CCCP | Социаллă Совет Республикисен Союзĕ | In Chuvash = USSR | Unionen af Socialistiske Sovjetrepublikker | In Danish = URSS | Unione delle Repubbliche Socialiste Sovietiche | In Italian = ZSRR | Związek Socjalistycznych Republik Radzieckich | In Polish = SSKS | Szovjet Szocialista Köztársaságok Szövetsége | In Hungarian = UdSSR | Union der Sozialistischen Sowjetrepubliken | In German = ΕΣΣΔ | Ένωση Σοβιετικών Σοσιαλιστικών Δημοκρατιών | In Greek = URSS | Unión de Repúblicas Socialistas Soviéticas | In Spanish = NSVL | Nõukogude Sotsialistlike Vabariikide Liit | In Estonian = SESB | Sobietar Errepublika Sozialisten Batasuna | In Basque = USSR | Uny fan Sosjalistyske Sowjetrepublyken | In Frisian = ԽՍՀՄ | Խորհրդային Սոցիալիստական Հանրապետությունների Միություն | In Armenian = URSS | Unión das Repúblicas Socialistas Soviéticas | In Galician = სსრკ | საბჭოთა სოციალისტური რესპუბლიკების კავშირი | In Georgian = URSS | Unio Rerum Publicarum Socialisticarum Sovieticarum | In Latin = CCPC | Советтик Социалисттик Республикалар Союзу | In Kirghiz = UdSSR | Unioun vun de Sozialistesche Sowjetrepubliken | In Letzeburgesh = PSRS | Padomju Sociālistisko Republiku Savienība | In Latvian = СССР | Сојуз на Советските Социјалистички Републики | In Macedonian = УРСС | Униуня Републичилор советиче Сочиалисте | In Moldavan = KRSS | Kesatuan Republik Sosialis Soviet | In Malay = USSR | Unie van Socialistische Sovjetrepublieken | In Dutch = SSSR | Sambandet av Sosialistiske Sovjet-Republikkar | In Nynorsk = SSSR | Samveldet av sovjetiske sosialistrepublikker | In Norwegian = URSS | Unnion d'Républyiques Socialistes Soviétiques | In Norman = URSS | União das Repúblicas Socialistas Soviéticas | In Portuguese = URSS | Union de las Republicas Socialistas Sovieticas | In Occitan = SSRH | Susyalista Suwit Republikakunap Huñun | In Quechua = ССРЦ | Советон Социалистон Республикæты Цæдис | In Ossetian = URSS | Uniunea Republicilor Sovietice Socialiste | In Romanian = URSS | Unioni dî ripùbblichi sucialisti suviètichi | In Sicilian = ZSSR | Zveza sovjetskih socialističnih republik | In Slovenian = СССР | Савез Совјетских Социјалистичких Република | In Serbian = SSCB | Sovyet Sosyalist Cumhuriyetler Birliği | In Turkish = СРСР | Союз Радянських Соціалістичних Республік | In Ukrainian = SSRI | Sovet Sotsialistik Respublikalar Ittifoqi | In Uzbek | In Tatar | → International relations → Geography | 
| SSRD | Station Set Requirements Document | In English | |
| SSRH | Susyalista Suwit Republikakunap Huñun = SSRB, URSS, USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Quechua | → International relations → Geography | 
| SSRI | Selective Serotonin Reuptake Inhibitor | In English | |
| SSRİ | Sovet Sosialist Respublikaları İttifaqı = SSRB, URSS, USSR, СССР, CCCP, SSSR, XRSS, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Azerbaijani | → International relations → Geography | 
| SSRI | Sovet Sotsialistik Respublikalar Ittifoqi = SSRB, URSS, USSR, СССР, CCCP, SSSR, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР (look above) | In Uzbek | → International relations → Geography | 
| SSRIMp | Space Station Resource Impact Model | In English | → Astronautics | 
| SSRMS | Space Station Remote Manipulator System | In English | → Astronautics | 
| SSRN | System Software Reference Number | In English | → Software | 
| SSRN | Social Science Research Network (www.ssrn.com) | In English | → Organizations and associations → Social sciences | 
| SSROP | Space Station Resource Optimization Program | In English | → Astronautics | 
| SSRP | System Safety Review Panel | In English | → Accidents, risks, safety | 
| SSRp | Stochastics and Stochastics Reports | In English | → Serial publications, periodicals → Mathematics | 
| SSRR | Station Set Requirements Review | In English | |
| SSRT | STS SEcurity Review TEam | In English | |
| SSRV | Solar-Sail Race Vehicle | In English | → Energy economics → Vehicle engineering | 
| SSRv | Space Science Reviews | In English | → Serial publications, periodicals → Astronomy | 
| SSS | Southern Sociological Society | In English | → Organizations and associations → Sociology | 
| SSS | Svenska Spårvägssällskapet | In Swedish | → Organizations and associations → Transport and postal services → Sweden | 
| SSS | Service des Sociétés Secrètes | In French | → Organizations and associations → Police | 
| SSS | Scanning Star Simulator | In English | |
| SSS | System Security Standard | In English | |
| SSS | System Segment Specification | In English | |
| SSS | Sensor Support System | In English | |
| SSS | Simulation Study Series | In English | |
| SSS | Sortie Support System | In English | |
| SSS | Space Shuttle Segment | In English | → Astronautics | 
| SSS | Spacecraft Software System | In English | → Software → Astronautics | 
| SSS | Spinning Sun Sensor | In English | → Astronomy → Astronautics | 
| SSS | Stage Separation Subsystem | In English | |
| SSS | Station Set Specification | In English | |
| SSS | Social Studies of Science | In English | → Serial publications, periodicals → Social sciences → Mathematics and natural sciences | 
| SSS | Sport Staalt Spieren | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSS | Steeds Sterker Strijden | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSS | Sea Surface Salinity | In English | → Marine research, oceanography | 
| SSS | Selective Service System | In English | |
| SSSA | Soil Science Society of America (www.soils.org) | In English | → Organizations and associations → Agricultural sciences → United States | 
| SSSAJ | Soil Science Society of America Journal | In English | → Serial publications, periodicals → Earth sciences → Agricultural sciences → United States | 
| SSSC | Space Station Support Center | In English | → Astronautics | 
| SSSE | Sport Staalt Spieren Eibergen | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSSI | Society for the Study of Symbolic Interaction | In English | → Organizations and associations → Sociology | 
| SSSM | Scandinavian Society for Sexual Medicine | In English | → Organizations and associations → Sexual problems → Urology → Applied sciences, technology | 
| SSSM | Service de Santé et de Secours Médical | In French | → Medicine | 
| SSSR | Society for the Scientific Study of Religion | In English | |
| SSSR | Soyuz Sovetskikh Sotsialisticheskikh Respublik = SSRB, URSS, USSR, СССР, CCCP, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Russian | → International relations → Geography | 
| SSSR | Savez Sovjetskih Socijalističkih Republika = SSRB, URSS, USSR, СССР, CCCP, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Serbo-Croatian | → International relations → Geography | 
| SSSR | Svaz sovětských socialistických republik = SSRB, URSS, USSR, СССР, CCCP, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Czech | → International relations → Geography | 
| SSSR | Sambandet av Sosialistiske Sovjet-Republikkar = SSRB, URSS, USSR, СССР, CCCP, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Nynorsk | → International relations → Geography | 
| SSSR | Samveldet av sovjetiske sosialistrepublikker = SSRB, URSS, USSR, СССР, CCCP, XRSS, SSRİ, TSRS, ZSRR, SSKS, UdSSR, ΕΣΣΔ, NSVL, SESB, ԽՍՀՄ, სსრკ, CCPC, PSRS, УРСС, KRSS, SSRH, ССРЦ, ZSSR, SSCB, СРСР, SSRI (look above) | In Norwegian | → International relations → Geography | 
| SSSS | Space Shuttle System Specification | In English | → Astronautics | 
| SSSS | Staphylococcal Scalded Skin Syndrome | In English | → Dermatology → Infectious diseases | 
| SSSSR | Space Shuttle System Safety Review | In English | → Accidents, risks, safety → Astronautics | 
| SSSSS | Springer Verlag Springer Series on Solid State Sciences | In English | → Serial publications, periodicals → Physics | 
| SSST | Space Station System Trainer | In English | → Astronautics | 
| SSSV | Sport Staalt Spieren Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSSyn | Springer Verlag Springer Series on Synergetics | In English | → Serial publications, periodicals → Physics | 
| SST | Sea Surface Temperature | In English | → Meteorology, climatology → Marine research, oceanography | 
| SST | Service pour la Science et la Technologie | In French | → Mathematics and natural sciences → Engineering, technology | 
| SST | Sisters of Saint Thomas | In English | → Roman catholic church | 
| SST | Supersonic Transport | In English | → Aeronautics, aircraft | 
| SST | Shuttle System Test | In English | → Astronautics | 
| SST | Simulated Structural Test | In English | |
| SST | Simulation and Systems Test | In English | |
| SST | Single System Trainer | In English | |
| SST | Space Surveillance and Tracking | In English | → Astronomy → Astronautics | 
| SST | Spacecraft Systems Test | In English | → Astronautics | 
| SST | Structural Static Test | In English | |
| SST | Secouriste Sauveteur du Travail | In French | → Medicine → Labour, labour economics | 
| SSTC | Space Shuttle Test Conductor | In English | → Astronautics | 
| SSTCLS | Space Shuttle Test, Checkout, and Launch Support | In English | → Astronautics | 
| SSTec | Solid State Technology | In English | → Serial publications, periodicals → Physics | 
| SSTF | Space Station Training Facility | In English | → Education → Astronautics | 
| SSTO | Single Stage To Orbit | In English | → Astronautics | 
| SSTOM | SAIL System and Test Operations Manager | In English | |
| SSTor | Studia Societatis Scientiarum Torunensis | In Latin | → Serial publications, periodicals → Mathematics and natural sciences | 
| SSTP | Shielded and Shielded Twisted Pair | In English | → Electrical engineering | 
| SSTS | Satellite Surveillance and Tracking System | In English | → Astronautics | 
| SSTS | Space Surveillance and Tracking System | In English | → Astronautics | 
| SSTS | Space-Based Surveillance and Tracking System | In English | → Astronautics | 
| SSU | Secours et Soins d'Urgence | In French | → Traumatology | 
| SSUS | Spinning Solid Upper Stage | In English | → Astronautics | 
| SSUSA | SSUS for Atlas-centaur-class spacecraft | In English | → Astronautics | 
| SSUSD | SSUS for Delta-class spacecraft | In English | → Astronautics | 
| SSUSP | Spinning Solid Upper Stage Project | In English | → Astronautics | 
| SSV | Space Shuttle Vehicle | In English | → Astronautics | 
| SSV | Space Sortie Vehicle | In English | → Astronautics | 
| SSV | Société Suisse de Vexillologie (www.vexilla.ch) = SGFF | Schweizerische Gesellschaft für Fahnen- und Flaggenkunde | In German = SSV | Società Svizzera di Vessillologia | In Italian | In French | → Organizations and associations → Flags, banners → Switzerland | 
| SSV | Società Svizzera di Vessillologia (www.vexilla.ch) = SGFF (look above) | In Italian | → Organizations and associations → Flags, banners → Switzerland | 
| SSV | Sigarayla Savaşanlar Vakfı | In Turkish | → Foundations | 
| SSV | Stompetorense Sport Vereniging | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSV | Samen Sportend Vereend | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSVB | Sächsischer Sportverband Volleyball | In German | → Organizations and associations → Sport, physical exercises | 
| SSVS | Subsystem Verification Specification | In English | |
| SSVU | Spoorwegen Sport Vereniging Utrecht | In Dutch | → Organizations and associations → Sport, physical exercises → Netherlands | 
| SSW | Schwangerschaftswoche | In German | → Obstetrics | 
| SSW | Steeds Sterker Worden | In Dutch | → Organizations and associations → Sport, physical exercises | 
| SSWG | Shuttle Security Working Group | In English | → Astronautics | 
| SSWP | Space Station Work Package | In English | → Astronautics | 
| SSWP | Springer Verlag Springer Series on Wave Phenomena | In English | → Serial publications, periodicals → Physics | 
| ST | Sciences de la Terre | In French | → Earth sciences | 
| ST | Surveillance du Territoire | In French | → Police | 
| ST | Sameindu Tjóðir = UN | Unuigintaj Nacioj | In Esperanto = ONU | Organisation des Nations Unies | In French = ONU | Organizazión d'as Nazions Unitas | In Aragonese = ААН | Арганіза́цыя Аб'ядна́ных На́цый | In Belarusian = VN | Verenigde Nasies | In Afrikaans = ONU | Organización de les Naciones Uníes | In Asturian = OOH | Организацията на обединените нации | In Bulgarian = ABU | Aozadur ar Broadoù Unanet | In Breton = ПНО | Пĕрлешнĕ Нацисен Организацийĕ | In Chuvash = FN | Feriene Naasjes | In Frisian = UN | United Nations | In English = NBE | Nazio Batuen Erakundea | In Basque = ONU | Organización das Nacións Unidas | In Occitan = UN | Unuiĝinta Naciaro | In Esperanto = UN | Ujedinjeni Narodi | In Bosnian = CN | Consociatio Nationum | In Latin = FN | Forenede Nationer | In Danish = UN | Unionita Nacioni | In Ido = ONU | Organizzazione delle Nazioni Unite | In Italian = KU | Kenedhlow Unys | In Cornish = ONU | Organització de les Nacions Unides | In Catalan = ΟΗΕ | Οργανισμός Ηνωμένων Εθνών | In Greek = ΗΕ | Ηνωμένα Έθνη | In Greek = ONU | Organización de las Naciones Unidas | In Spanish = VN | Vereinte Nationen | In German = VN | Verenigde Naties | In Dutch = VN | Vereent Natiounen | In Letzeburgesh = ООН | Организация Oбъединённых Hаций | In Russian = ONU | Organisacion des Nacions unies | In Franco-Provençal = ONZ | Organizacja Narodów Zjednoczonych | In Polish = BMT | Birlashgan Millatlar Tashkiloti | In Uzbek = ООН | Організація Об'єднаних Націй | In Ukrainian = BM | Birleşmiş Milletler | In Turkish = LHiQ | Liên Hiệp Quốc | In Vietnamese = OKB | Organizata e Kombeve të Bashkuara | In Albanian = OSN | Organizácia Spojených národov | In Slovak = OZN | Organizacija Združenih Narodov | In Slovenian = УН | Уједињене нације | In Serbian = FN | Förenta nationerna | In Swedish = UM | Umoja wa Mataifa | In Swahili = NU | Nazzioni Uniti | In Sicilian = ONU | Organizaţia Naţiunilor Unite | In Romanian = ONU | Organização das Nações Unidas | In Portuguese = VN | Vereenten Natschonen | In Low German = HN | Huñusqa Nasyunkuna | In Quechua = PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay = NA | Náisiúin Aontaithe | In Irish = ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian = SÞ | Sameinuðu þjóðanna | In Icelandic | In Faroese | → International relations → United Nations | 
| ST | Star Tracker | In English | → Astronomy → Astronautics | 
| ST | Serial Traceability | In English | |
| ST | Shock Tunnel | In English | |
| ST | Simplification Task | In English | |
| ST | Space Telescope | In English | → Astronomy → Astronautics | 
| ST | Spacelab Technology | In English | → Astronautics | 
| ST | Special Tooling | In English | |
| ST | Sponsored Training | In English | → Education → Labour, labour economics | 
| ST | Studia Theologica | In Latin | → Religion, theology | 
| ST&E | Security Test and Evaluation | In English | → Data | 
| ST2N | Société Nouvelle des Transports de l'Agglomération Niçoise | In French | → Transport and postal services | 
| STA | Siebenten-Tags-Adventisten | In German | → Christianity | 
| STA | Science and Technology Agency | In English | → Mathematics and natural sciences → Applied sciences, technology | 
| STA | Shuttle Training Aircraft | In English | → Education → Aeronautics, aircraft → Astronautics | 
| STA | Static Test Article | In English | |
| STA | Structural Test Article | In English | |
| STA | Sportclub Ter Apel | In Dutch | → Organizations and associations → Sport, physical exercises | 
| STA | Statistics | In English | → Statistics | 
| STACC | Standard Telemetry And Communications Component | In English | → Astronomy → Astronautics → Telecommunications | 
| STADAC | Station Data Acquisition And Control | In English | → Data | 
| STADAN | Satellite Tracking And Data Acquisition Network | In English | → Data → Astronautics | 
| STADAN | Space Tracking And Data Acquisition Network | In English | → Data → Astronautics | 
| STADU | System Termination And Display Unit | In English | → Human-computer interaction | 
| STAF | Sciences et Technologies de l'Apprentissage et de la Formation | In French | → Education | 
| STAFF | Spectacle et Technique Association Française de Formation | In French | → Associations → Education → Arts → France | 
| STAG | Secure Text And Graphics | In English | |
| STAG | Shuttle Turnaround Analysis Group | In English | → Astronautics | 
| StAM | Studies in Applied Mathematics | In English | → Serial publications, periodicals → Mathematics | 
| STAMP | System Testability And Maintainability Program | In English | → Maintenance and logistics | 
| STAN | Système de Transport de l'Agglomération Nancéienne | In French | → Transport and postal services → France | 
| STAPS | Sciences et Techniques des Activités Physiques et Sportives | In French | → Education → Sport, physical exercises | 
| STAR | Scientific And Technical Report | In English | → Mathematics and natural sciences → Engineering, technology | 
| STAR | Shuttle Turnaround Analysis Report | In English | → Astronautics | 
| STAR | Significant Technological Achievement In Research | In English | → Engineering, technology | 
| STAR | Significant Technology Achievement Through Research | In English | → Engineering, technology | 
| STAR | Software Tools And Requirements | In English | → Software | 
| STAR | Source Transmission And Response | In English | |
| STAR | Space Transportation Automated Reconfiguration | In English | → Astronautics | 
| STAR | Standard Terminal Arrival Route | In English | → Transport by air → Aeronautics, aircraft | 
| STARE | Staring Technology Advanced Research and Evaluation | In English | → Research policy | 
| STAREC | Société Technique d'Application et de Recherche Électronique | In French | → Electronics | 
| STARR | Schedule, Technical, And Resources Report | In English | |
| STARS | Software Technology for Adaptable and Reliable Systems | In English | → Software | 
| STARS | Space Transportation Automated Reconfiguration System | In English | → Astronautics | 
| STARS | Status Analysis And Reporting System | In English | |
| START | Selection To Activate Random Testing | In English | |
| STAS | Space Transportation Architecture Study | In English | → Astronautics | 
| STAT | Signal Transducer and Activator of Transcription | In English | → Genetics → Biochemistry, biophysics | 
| STAT | System Testability and Analysis Tool | In English | |
| STATEC | Service central de la statistique et des études économiques | In French | → Statistics → Economics | 
| STATS | Star Tracker Alignment Test Set | In English | → Astronomy → Astronautics | 
| STB | Sclérose Tubéreuse de Bourneville | In French | → Neurology | 
| STB | Surface Transportation Board (www.stb.dot.gov) | In English | → Transport and postal services | 
| STBC | Société des Transports du Bassin Chellois | In French | → Transport and postal services | 
| STBE | Space Transportation Booster Engine | In English | → Astronautics | 
| StBio | Studia Biophysica | In Latin | → Serial publications, periodicals → Biochemistry, biophysics | 
| STC | Stennis Test Center | In English | |
| STC | SHAPE (Supreme Headquarters Allied Powers Europe) Technical Center | In English | → Military engineering | 
| STC | Satellite Test Center | In English | → Astronautics | 
| STC | Satellite TRacking Center | In English | → Astronautics | 
| STC | Sensitivity Time Control | In English | |
| STC | Short-Time Constant | In English | |
| STC | Shuttle Test Conductor | In English | → Astronautics | 
| STC | Space Technology Center | In English | → Astronautics | 
| STC | Spacecraft Test Conductor | In English | → Astronautics | 
| STC | Standard Test Configuration | In English | |
| STC | Systems Test Complex | In English | |
| STCC | STS Transportation Coordination Center | In English | |
| StCeF | Studii şi Cercetări de Fizică | In Romanian | → Serial publications, periodicals → Physics | 
| StCeM | Studii şi Cercetări Matematice | In Romanian | → Serial publications, periodicals → Mathematics | 
| StCMA | Studii şi Cercetări de Mecanică Aplicată | In Romanian | → Serial publications, periodicals → Mechanical engineering | 
| StCom | Statistics and Computing | In English | → Serial publications, periodicals → Statistics → Computer science | 
| STCP | Short-Term Cost Plan | In English | → Prices | 
| STCS | Special Telemetry Conversion System | In English | → Geodesy, cartography | 
| STCUM | Société de Transport de la Communauté Urbaine de Montréal | In French | → Organizations and associations → Transport and postal services → Canada | 
| STD | Sexually Transmitted Disease | In English | → Infectious diseases | 
| STD | Stratigraphische Tabelle von Deutschland | In German | → Stratigraphy → Germany | 
| STD | Shuttle Test Detector | In English | → Astronautics | 
| STD | Software Test Description | In English | → Software | 
| STD | Spacecraft Technology Division | In English | → Astronautics | 
| STD | Special Test Device | In English | |
| STD | Standard Test Device | In English | |
| STD | Secondary Transmitted Data | In English | → Data → Telecommunications | 
| STD | Short Term Disability | In English | → Pathology | 
| STD | Spécifications Techniques Détaillées | In French | → Engineering, technology | 
| STDCE | Surface Tension Driven Convection Experiment | In English | |
| STDL | Standard Distribution List | In English | |
| STDN | Spacecraft Tracking and Data Network | In English | → Data → Networks, communication → Astronautics | 
| STE | Special Test Equipment | In English | |
| STE | System Test Engineer | In English | |
| STE | Service Technique Électricité | In French | → Electrical engineering | 
| STEB | Scienca kaj Teknika Esperanto-Biblioteko | In Esperanto | → Libraries → Mathematics and natural sciences → Applied sciences, technology → Artificial languages (linguistics) |