| Subject | English | Thesaurus |
| st.exch., abbr. | American Computerized Commodity Exchange System And Services | ACCESS |
| mil., abbr. | Army Data Services and Administration Systems Command | ADSC |
| mil., abbr. | Board of Directors, NATO Maintenance Supply Services System | BDNMSSS |
| mil., abbr. | Client Server Environment-System Services | CSE-SS |
| abbr., file.ext. | Common Management Information Services/System | CMIS |
| abbr., file.ext. | Cooperative Library Agency for Systems and Services | CLASS |
| abbr., post | Customer Services Management Data System | CSMDS |
| IT, abbr. | Dedicated Office Systems and Services | DOSS |
| USA | Defense Information Systems Network - Leading Edge Services | DISN-LES |
| mil., abbr. | Defense Information Systems Technical Service Program | DISTSP |
| mil., abbr. | Defense Satellite Communications System Service Life Enhancement Program | DSC-SLEP |
| USA | Directorate Of Information Systems And Services | DISS |
| abbr., progr. | enabling system services | enabling services (ssn) |
| abbr. | Information Systems and Services | ISS (информационные системы и услуги Oleg Sollogub) |
| abbr. | Information Systems and Services | IS&S (информационные системы и услуги Oleg Sollogub) |
| abbr., commun. | Information Systems / Integrated Services | IS |
| USA | Inspection Services Information System | ISIS |
| abbr., astronaut. | Integrated Global Ocean Services System | IGOSS |
| IT, abbr. | Integrated Systems and Information Services | ISIS (OS, Intel) |
| abbr., file.ext. | Integrated Systems and Information Services | ISIS |
| abbr., scottish | Joint Services Imagery Exploitation System | JSIES (UK armed forces) |
| mil., abbr. | Joint Services Imagery Processing System | JSIPS |
| abbr., scottish | Joint Services Interior Intrusion Detection System | JSIIDS (USA) |
| abbr., commun. | Local Services Management System | LSMS |
| ecol., abbr. | Marine Meteorological Services System | MMSS |
| mil., abbr. | Military Health Services System | MHSS |
| account., abbr. | National Information Services And Systems | NISS |
| abbr. | National Information Services & Systems | NISS (ABelonogov) |
| telecom., abbr. | Operator Services System | OSS |
| abbr., file.ext. | Personal Communication Services/System | PCS |
| mil., abbr. | Program Manager, Multi-Service Communications System | PMMSCS |
| IT, abbr. | Remote System Services Control Point | RSSCP (SSCP) |
| abbr., scottish | Services Air Cargo System | SACS (UK) |
| abbr., scottish | Services Information Management System | SIMS |
| mil., abbr. | Services Systems Acquisition Review Council | SSARC |
| abbr., astronaut., mil. | System Acquisition Support Services | SASS |
| busin., abbr. | System Quality Services | SQS |
| IT, abbr. | System Services Control Point | SSCP (NAU, SNA, SSCP) |
| abbr., IT | System Services Control Point | SSCP |
| telecom., abbr. | System Services Control Point | SSCP (SNA) |
| IT, abbr. | System Services Control Point Network Services | SSCPNS (SSCP) |
| comp., net., abbr. | System Services Interface | SSI |
| comp., net., abbr. | System Update Services | SUS |
| abbr., scottish | Systems Acquisition Support Services | SASS |
| abbr., comp., net. | Systems Network Architecture Distributed Services | SNADS |
| abbr., comp., net. | Systems Network Architecture/Management Services | SNA/MS |
| abbr., file.ext. | Systems Services and Technology | SST |
| progr. | system/service uptime monitor | service uptime monitor (ssn) |
| NYSE., abbr. | Total System Services, Inc. | TSS |
| comp., abbr. | Unix System Services | USS |
| abbr. | User Services and Systems Support | USSS |
| comp., abbr. | Web Engineered Systems and Services | WESS |
| abbr., file.ext. | Windows Open Services/Systems Architecture | WOSA (Microsoft) |
| IT, abbr. | Xerox Network Services / Systems / Standard | XNS (Xerox, XNS) |
| abbr., office.equip. | Xerox Services for Unix Systems | XSUS (translator911) |
