

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| SW | Solar Wing | In English | → Astronautics | 
| SW | Spot Weld | In English | → Metallurgy | 
| SW | Switchboard Wound | In English | |
| SWA | Support Work Authorization | In English | |
| SWAD | Semantic Web Advanced Development | In English | → Internet → Computer-based techniques → Semiotics | 
| SWAD | Subaccount Work Authorization Document | In English | |
| SWAD | Subdivision of Work Authorization Document | In English | |
| SWAIC | Program on Southwest Asia and Islamic Civilization | In English | → Islam → Area studies | 
| SWAN | Solar Wind Anisotropy (Experiment) | In English | → Astronomy | 
| SWAS | Submillimeter Wave Astronomy Satellite | In English | → Astronautics → Astronomy | 
| SWAT | Stress Wave Analysis Technique | In English | |
| SWATEC | Short-Wavelength Thermoelectrically Cooled | In English | |
| SWB | Solder Waiver Board | In English | |
| SWC | Standard Work Center | In English | |
| SWC | Space Warfare Center | In English | → Research institutes → Astronautics → Military engineering | 
| SWCAS | Southwest Conference of the Association for Asian Studies | In English | → Associations → Language, linguistics, literature → Geography, biography, history | 
| SWCC | Southwestern Computing Center | In English | → Computer science | 
| SWCC | Standard Work Center Code | In English | |
| SWCDR | Software Critical Design Review | In English | → Software | 
| SWCI | Software Configuration Inspection | In English | → Software | 
| SWCNT | Single Wall Carbon Nanotube | In English | |
| SWD | Social Welfare Department | In English | → Public administration, government → Social welfare | 
| SWD | Semantic Web Deployment | In English | → Internet → Linguistics | 
| SWD | South Wisconsin District | In English | → Geography → United States | 
| SWD | Seismic While Drilling | In English | → Earth sciences → Mining | 
| SWD | Scott Werley Design (www.scottwerleydesign.com) | In English | |
| SWD | Supersonic Wave Drive | In English | → Photography | 
| SWD | Solliès Web Design | In English | → Internet | 
| SWD | Solid Waste Division | In English | → Environmental technology, water supply, waste management | 
| SWD&I | Software Development and Integration | In English | → Software | 
| SWDC | South Wairarapa District Council (www.swdc.govt.nz) | In English | → Municipal administration | 
| SWDC | South West Development Commission (www.swdc.wa.gov.au) | In English | → Organizations and associations → Economics | 
| SWDC | Southwest Dressage Championship | In English | |
| SWDC | South West Development Centre (www.swdc.org.uk) | In English | → Organizations and associations → Medicine → Social welfare | 
| SWDC | Sanctuary Women's Development Center | In English | → Social welfare | 
| SWDC | South Wales Distribution Centre (www.swdc.co.uk) | In English | → Economics | 
| SWDC | Stung Treng Women's Development Center | In English | → Organizations and associations | 
| SWDC | Software Development Center | In English | → Computer science | 
| SWDC | Southwest Washington Dance Center | In English | → Dance | 
| SWDC-CS | Southwest Diagnostic Centers of Colorado Springs | In English | → Diagnostics → United States | 
| SWDU | Seawater Desalination Unit | In English | → Environmental technology, water supply, waste management | 
| SWEA | Severn Wye Energy Agency | In English | → Energy economics | 
| SWEAT | Severe WEAther Threat | In English | → Meteorology, climatology → Natural disasters | 
| SWEB | South Western Electricity Board | In English | → Electrical engineering | 
| SWEE | Software Engineering Environment | In English | → Software | 
| SWEPCO | Southwestern Electric Power Company | In English | → Organizations and associations → Energy economics → Electrical engineering | 
| SWF | ShockWave Flash | In English | → Computer science | 
| SWF | Small Web Format | In English | → Data → Graphical processing | 
| SWF | Südwestfunk | In German | → Telecommunications → Entertainment | 
| SWF | Spezial Werkzeugfabrik Feuerbach | In German | → Mechanical engineering → Automobile manufacturing | 
| SWG | Special Working Group | In English | |
| SWG | Schedule Working Group | In English | |
| SWG | Science Working Group | In English | |
| SWG | Security Working Group | In English | |
| SWG | Software Working Group | In English | → Software | 
| SWG-CA | Special Working Group on Conformity Assessment | In English | |
| SWG-RA | Special Working Group on Registration Authorities | In English | |
| SWHG | Social Welfare History Group | In English | → Organizations and associations → Social welfare → History | 
| SWIFET | Short-Wave Infrared Field Effect Transistor | In English | → Electronics | 
| SWIFET | Switched Field Effect Transistor | In English | → Electronics | 
| SWIFT | Society for Worldwide Interbank Financial Telecommunication International Fund Transfer | In English | → Finance | 
| SWIM | System Wide Information Management | In English | → Knowledge management | 
| SWIR | Sierra Wireless Inc. | In English | |
| SWIR | Short-Wavelength Infrared | In English | |
| SWL | Signals Warfare Lab | In English | → Research institutes → Military engineering | 
| SWL | Short Wave Listener | In English | → Telecommunications | 
| SWL | Spamhaus White List | In English | → Software → Networks, communication | 
| SWLABR | She Was Like A Bearded Rainbow | In English | → Music | 
| SWOB | Salaries, Wages, Overhead, and Benefits | In English | → Labour, labour economics → Accounting | 
| SWOT | Strengths Weaknesses Opportunities Threats | In English | |
| SWOV | Stichting Wetenschappelijk Onderzoek Verkeersveilgheid (www.swov.nl) | In Dutch | → Foundations → Transport and postal services → Netherlands | 
| SWP | Safe Working Pressure | In English | |
| SWP | Single Wire Protocol | In English | → Networks, communication → Telecommunications | 
| SWPA | Shuttle Wing Panel Analysis | In English | → Astronautics | 
| SWPDR | Software Preliminary Design Review | In English | → Software | 
| SWR | Südwestrundfunk (www.swr.de) | In German | → Telecommunications → Entertainment → Germany | 
| SWR | Standing Wave Ratio | In English | |
| SWR | Siedewasserreaktor = BWR | Boiling Water Reactor | In English = REB | Réacteur à Eau Bouillante | In French | In German | → Nuclear technology | 
| SWRL | Semantic Web Rule Language | In English | → Programming languages → Internet → Semiotics | 
| SWRR | Software Readiness Review | In English | → Software | 
| SWS | Semantic Web School | In English | → Computer-based techniques → Telecommunications → Semiotics | 
| SWS | Stadoù War Straniñ | In Breton | |
| SWS | Software System | In English | → Software | 
| SWSF | Semantic Web Science Foundation | In English | → Foundations → Software → Networks, communication → Language, linguistics, literature | 
| SWSW | Semantic Web Services Week | In English | → Internet → Computer-based techniques → Semiotics | 
| SWSWA | South West Song Writers Association | In English | → Associations → Music | 
| SWT | Supersonic Wind Tunnel | In English | → Aeronautics, aircraft | 
| SWWG | Software Working Group | In English | → Software | 
| SWZ | Stadoù War Ziorren | In Breton | |
| SY | Suomen Yrittäjät | In Finnish | → Organizations and associations → Economic policy → Finland | 
| SY | Shoulder Yaw | In English | |
| SY | School Year | In English | → Education | 
| SYCOET | SYstème de COnfiguration des Équipements de Téléconduite (pour les réseaux de transport d'énergie) | In French | → Software → Energy economics | 
| SYCTOM | Syndicat InterCommunal de Traitement des Ordures Ménagères (de la Ville de Paris) (www.syctom-paris.fr) | In French | → Environmental technology, water supply, waste management → France | 
| SydOP | Sydney Observatory Papers | In English | → Serial publications, periodicals → Astronomy | 
| SYGAL | SYstème de Gestion Automatisée des Loyers | In French | → Software → Accommodation | 
| SYGAL | SYstème de Gestion pour l'Alimentation | In French | → Software → Food technology | 
| SYGARD | SYstème de Gestion d'Accès au Réseau de Distribution | In French | → Software → Energy economics | 
| SYGMA | SYstème de Gestion de la MAintenance | In French | → Software → Maintenance and logistics | 
| SYLEN | SYstème de LEcture Nomade | In French | → Libraries | 
| SYLVIE | SYstème de Listage et de Ventilation d'Informations Élaborées | In French | → Software → Personnel management | 
| SYNAD | Syndicat National des Adjuvants pour Bétons et Mortier (www.synad.fr) | In French | → Organizations and associations → Civil engineering → Construction → France | 
| SYNALAF | Syndicat National des Labels Avicoles de France | In French | → Organizations and associations → Agricultural sciences → France | 
| SYNAMEC | Synthesis Tool for Aeronautical Mechanisms Design | In English | → Aeronautics, aircraft | 
| SYNCOMECS | SYNthesis of Aeronautical COmpliant MEChanical Systems | In English | → Mechanical engineering → Aeronautics, aircraft | 
| SynMe | Synthetic Metals | In English | → Serial publications, periodicals → Chemistry → Metallurgy | 
| SYNOP | Synoptic Ocean Prediction Experiment | In English | → Marine research, oceanography | 
| SYNPREFH | Syndicat National des Pharmaciens des Établissements Publics de Santé | In French | → Organizations and associations → Pharmacology, toxicology | 
| SYSFAC | SYstème de Surveillance de la FAtigue de la Chaudière | In French | → Software → Nuclear technology | 
| SYSIF | SYStème d'Information des Filiales | In French | → Knowledge management | 
| SYSREM | System Requirements Engineering Methodology | In English | → Engineering, technology | 
| SYSTRAN | Systems Analysis Translator | In English | |
| SyTec | Systems Technology | In English | → Serial publications, periodicals → Engineering, technology | 
| SYTRAL | SYndicat des TRansports en commun de l'Agglomération Lyonnaise (www.sytral.fr) | In French | → Organizations and associations → Transport and postal services → France | 
| SZA | Schweißtechnische Zentralanstalt | In German | → Metallurgy | 
| SZBP | Společná zahraniční a bezpečnostní politika | In Czech | → European Union | 
| SZE | Széchenyi István Egyetem | In Hungarian | → Higher education, universities | 
| SZO | Světová zdravotnická organizace = MOS | Monda Organiz(aĵ)o pri Sano | In Esperanto = WHO | World Health Organization | In English = OMS | Organisation Mondiale de la Santé | In Esperanto = OMS | Organizzazione Mondiale della Sanità | In Italian = WGO | Wêreldgesondheidsorganisasie | In Afrikaans = OMS | Organización Mundial de la Salú | In Asturian = СЗО | Световната здравна огранизация | In Bulgarian = OMS | Organització Mundial de la Salut | In Catalan = OMS | Organización Mundial de la Salud | In Spanish = MTO | Maailma Terviseorganisatsioon | In Estonian = MOE | Munduko Osasun Erakundea | In Basque = OMS | Organisacion mondiâla de la sandât | In Franco-Provençal = OMS | Organización Mundial da Saúde | In Galician = SZO | Svjetska zdravstvena organizacija | In Croatian = RTD | Rêxistina Tendurustiyê ya Dinyayê | In Kurdish = UMS | Urganizazziun mundiala da la Santaa | In Lombard = PSO | Pasaulio sveikatos organizacija | In Lithuanian = PVO | Pasaules veselības organizācija | In Latvian = ÜST | Ümumdünya Səhiyyə Təşkilatı | In Turkish | In Czech | → United Nations → Medicine | 
| SZO | Svjetska zdravstvena organizacija = MOS, WHO, OMS, WGO, СЗО, MTO, MOE, RTD, UMS, PSO, PVO, ÜST (look above) | In Croatian | → United Nations → Medicine | 
| SZP | Společná Zemědělská Politika = PAC | Politique Agricole Commune | In French = PAC | Política Agrícola Comunitària | In Catalan = GAP | Gemeinsame Agrarpolitik | In German = ΚΑΠ | Κοινή αγροτική πολιτική | In Greek = KAP | Komuna Agrikultura Politiko | In Esperanto = PAC | Política Agrícola Común | In Spanish = KAP | Közös agrárpolitika | In Hungarian = PAC | Politica Agricola Comune | In Italian = BŽŪP | Bendroji žemės ūkio politika | In Lithuanian = GLB | Gemeenschappelijk Landbouwbeleid | In Dutch = CAP | Common Agricultural Policy | In English = WPR | Wspólna polityka rolna | In Polish = ССП | Спільна сільськогосподарська політика | In Ukrainian | In Czech | → European Union → Agricultural sciences | 
| SZPB | Společná zahraniční a bezpečnostní politika = CFSP | Common Foreign and Security Policy | In English = GASP | Gemeinsame Außen- und Sicherheitspolitik | In German = WPZiB | Wspólna polityka zagraniczna i bezpieczeństwa | In Polish = PESC | Politique Étrangère et de Sécurité Commune | In French = GBVB | Gemeenschappelijk Buitenlands en Veiligheidsbeleid | In Dutch = PESC | Politica Estera e di Sicurezza Comune | In Italian = СЗБП | Спільна зовнішня та безпекова політика | In Ukrainian = SZPB | Spoločná zahraničná a bezpečnostná politika | In Slovak = PESC | Política Externa e de Segurança Comum | In Portuguese = FUSP | Felles utenriks- og sikkerhetspolitikk | In Norwegian | In Czech | → European Union → International relations → Police | 
| SZPB | Spoločná zahraničná a bezpečnostná politika = CFSP, GASP, WPZiB, PESC, GBVB, СЗБП, FUSP (look above) | In Slovak | → European Union → International relations → Police | 
| SZPC | Shandong Zhonghua Power Company | In English | → Electrical engineering | 
| SÞ | Sameinuðu þjóðanna (www.un.org) = 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 = ST | Sameindu Tjóðir | In Faroese = HN | Huñusqa Nasyunkuna | In Quechua = PBB | Pertubuhan Bangsa-bangsa Bersatu | In Malay = NA | Náisiúin Aontaithe | In Irish = ÜRO | Ühinenud Rahvaste Organisatsioon | In Estonian | In Icelandic | → International relations → United Nations |