| PVWA | Planned Value of Work Accomplished | In English | |
| PVWS | Planned Value of Work Scheduled | In English | |
| QA | Quality Audit | In English | → Quality management |
| QA | Quality Assurance | In English | → Quality management |
| QA&T | Quality Assurance and Test | In English | → Quality management |
| QAC | Quality Assurance Chart | In English | → Quality management |
| QAD | Quality Assurance Division | In English | → Quality management |
| QAP | Quality Assurance Product | In English | → Quality management |
| QAP | Quality Assessment Procedures | In English | → Quality management |
| QAR | Quality Assurance Report | In English | → Quality management |
| QC | Quality Control | In English | → Quality management |
| QDS | Quality Data System | In English | → Quality management |
| QE | Quality Engineer | In English | → Quality management |
| QE | Quality Engineering | In English | → Quality management |
| QFD | Quality Functional Deployment | In English | → Quality management |
| QFD | Quality Function Deployment | In English | → Quality management |
| QI | Quality Information | In English | → Quality management |
| QI | Qualification Initiale | In French | → Quality management |
| QIC | Quality Information Control | In English | → Quality management |
| QIS | Quality Improvement Service | In English | → Quality management |
| QMS | Quality Management System | In English | → Quality management |
| QO | Qualification Opérationnelle | In French | → Quality management |
| QOS | Quality Operating System | In English | → Quality management |
| QP | Qualification des Performances | In French | → Quality management |
| QPD | Quality Planning Document | In English | → Quality management |
| QPL | Qualified Products List | In English | → Maintenance and logistics |
| QPL | Qualified Parts List | In English | → Maintenance and logistics |
| QPP | Quality Program Plan | In English | → Quality management |
| QPR | Quarterly Progress Report | In English | |
| QPRD | Quality Program Requirements Document | In English | → Quality management |
| QPRD | Quality Planning Requirements Document | In English | → Quality management |
| QPRH | Quality Planning Requirements Handbook | In English | → Quality management |
| QPSD | Quality and Productivity Systems Division | In English | → Quality management |
| QS | Quality System | In English | → Quality management |
| QSE | Qualité, Sécurité, Environnement | In French | → Quality management |
| QUADS | Quality Achievement Data System | In English | → Quality management |
| QUIC | Quality Information Control | In English | → Quality management |
| QUIC | Quality Data Information and Control | In English | → Quality management → Data |
| QUP | Quality Unit Pack | In English | → Quality management |
| R&QA | Reliability and Quality Assurance | In English | → Quality management |
| R3S | Rapid Records Retrieval System | In English | → Knowledge management |
| RADAR | Résultats, Approche, Déploiement, Appréciation, Revue | In French | → Quality management |
| RAM | Reliability Assessment Model | In English | → Quality management |
| RAMP | Replenishment Activity Management Plan | In English | |
| RAMPS | Resource Analysis and Mission Planning System | In English | |
| RAP | Reliability Assurance Program | In English | → Quality management |
| RAPP | Resource and Planning Program | In English | |
| RAQ | Responsable Assurance Qualité | In French | → Quality management |
| RAR | Resource Accommodation Report | In English | |
| RCL | Reliability Control Level | In English | → Quality management |
| RCM | Reliability-Centered Maintenance | In English | → Quality management → Maintenance and logistics |
| RDBMS | Relational Database Management System |
In English | → Data → Knowledge management |
| RFTA | Reverse Fault Tree Analysis | In English | → Quality management |
| RGD | Régie de Gestion des Données | In French | → Public administration, government → Computer science → Knowledge management |
| RIM | Resource Inventory Management | In English | → Maintenance and logistics |
| RIMS | Resource Inventory Management System | In English | → Maintenance and logistics |
| RIS | Research Information Systems | In English | → Research policy → Knowledge management |
| RM | Resource Management | In English | → Maintenance and logistics |
| RM | Remedial Maintenance | In English | → Maintenance and logistics |
| RM | Redundancy Management | In English | |
| RM&P | Reliability, Maintainability, and Producibility | In English | → Maintenance and logistics |
| RM&QA | Reliability, Maintainability, and Quality Assurance | In English | → Quality management → Maintenance and logistics |
| RM/AS | Risk Management/Assessment System | In English | |
| RMA | Reliability, Maintainability, and Availability | In English | → Maintenance and logistics |
| RMB | Regionalmanagement Burgenland | In German | |
| RMOP | Resource Management Operation Plan | In English | → Maintenance and logistics |
| RMP | Risk Management Plan | In English | |
| RMRS | Recoverable Maintenance Recall System | In English | → Maintenance and logistics |
| RMRS | Repeatable Maintenance Recall System | In English | → Maintenance and logistics |
| RMS | Redundancy Management System | In English | |
| ROLAP | Relational On Line Analytical Processing | In English | → Knowledge management → Data |
| RPN | Risk Priority Number | In English | → Quality management |
| RRM | Requirement and Risk Management | In English | |
| RRQ | Responsable Régional Qualité | In French | → Quality management |
| RSL | Resource Support List | In English | → Maintenance and logistics |
| RSPL | Recommended Spare Parts List | In English | → Maintenance and logistics |
| RTOLAP | Real-Time On Line Analytical Processing | In English | → Knowledge management → Data |
| RTPM | Real-Time Program Management | In English | |
| SAALC | San Antonio Air Logistics Center | In English | → Maintenance and logistics → Aeronautics, aircraft |
| SADIEau | Système Africain de Documentation et d'Information sur l'Eau | In French | → Knowledge management → 626 → 627 |
| SADIEau | Système Africain de Documentation et d'Information sur l'Eau = AWIS | African Water Information (and Documentation) System | In English |
In French | → Knowledge management → Hydrology → 626 → Environmental technology, water supply, waste management |
| SAE | Système d'Archivage Électronique | In French | → Knowledge management |
| SALC | Sacramento Air Logistics Center | In English | → Maintenance and logistics → Aeronautics, aircraft |
| SAN | Storage Area Network | In English | → Data → Knowledge management |
| SAPIR | Search on Audio-visual content using Peer-to-peer Information Retrieval | In English | → Computer-based techniques → Knowledge management |
| SATO | Supply and Transportation Operations | In English | → Maintenance and logistics |
| SBO | Systems Biology Ontology | In English | → Programming languages → Knowledge management → Libraries → Biological sciences |
| SCB | Schedule Control Board | In English | |
| SCE | Supply Chain Execution | In English | → Maintenance and logistics |
| SCEM | Supply Chain Event Management | In English | → Maintenance and logistics |
| SCM | Supply Chain Management | In English | → Maintenance and logistics |
| SCM | Schedule/Configuration Management | In English | |
| SCN | Schedule Change Notice | In English | |
| SDM | Security Document Management | In English | → Knowledge management |
| SDQA | Space Division Quality Assurance | In English | → Quality management → Spaceflight engineering, astronautics |
| SEAM | System Engineering and Analysis Management | In English | → Engineering, technology |
| SEAPG | Support Equipment Acquisition Planning Group | In English | → Maintenance and logistics |
| SEBIS | Semantics in Business Information Systems | In English | → Knowledge management → Semiotics |
| SEI | Support Equipment Installation | In English | → Maintenance and logistics |
| SEICO | Support Equipment Installation and Checkout | In English | → Maintenance and logistics |
| SESAME | Session d'Épreuves Spécifiques à l'Admission au Management Européen et international | In French | → Education |
| SFM | Senior Functional Manager | In English | |
| SFPPL | Short-Form Provisioning Parts List | In English | → Maintenance and logistics |
| SGC | Système de Gestion de Contenu(s) = CMS | Content Management System | In English |
In French | → Document processing → Knowledge management |
| SGDT | Système de Gestion de Données Techniques | In French | → Data → Knowledge management |
| SID | Système d’Information Documentaire | In French | → Knowledge management |
| SIE | Système d'Information sur l'Eau | In French | → Knowledge management → Hydrology → 627 → Environmental technology, water supply, waste management |
| SIES | Supervision, Inspection, Engineering, and Services | In English | → Engineering, technology |
| SIGB | Système Intégré de Gestion de Bibliothèque = ILS | Integrated Library System | In English = АБИС | Автоматизированные библиотечные информационные системы | In Russian |
In French | → Knowledge management → Libraries → Software |
| SIGLE | System for Information on Grey Literature in Europe | In English | → Libraries → Knowledge management |
| SIM | Singapore Institute of Management | In English | → Higher education, universities |
| SIMS | Single Inventory Management System | In English | → Maintenance and logistics |
| SIN | Support Information Network | In English | → Networks, communication → Knowledge management |
| SIOP | Single Integrated Operational Plan | In English | |
| SIOP | Single Integrated Operations Plan | In English | |
| SIOP | Strategic Integrated Operations Plan | In English | |
| SIP | Strategic Information Plan | In English | → Knowledge management |
| SIRH | Systèmes d'Information Ressources Humaines | In French | → Personnel management → Labour, labour economics |
| SIS | Shuttle Information Service | In English | → Knowledge management → Spaceflight engineering, astronautics |
| SIS | Shuttle Information System | In English | → Knowledge management → Spaceflight engineering, astronautics |
| SKOS | Simple Knowledge Organisation Systems | In English | → Knowledge management |
| SKU | Stock-Keeping Unit | In English | → Maintenance and logistics |
| SLA | Support and Logistics Areas | In English | → Maintenance and logistics |
| SLAM | Station Logistics And Maintainability (database) | In English | → Maintenance and logistics |
| SLSA | Shuttle Logistics Support Aircraft | In English | → Maintenance and logistics → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| SM | Systems Management | In English | → Engineering, technology |
| SMM | Subcontract Management Manual | In English | → 3474 |
| SMM | Subsystem Management Manual | In English | → Engineering, technology |
| SMP | Software Management Plan | In English | → Software |
| SMQ | Structure Module Qualification | In English | → Quality management |
| SMQ | Système de Management de la Qualité | In French | → Quality management |
| SMR | Source, Maintenance, and Recoverability | In English | → Maintenance and logistics |
| SMSG | Shuttle Maintenance Steering Group | In English | → Organizations and associations → Maintenance and logistics → Spaceflight engineering, astronautics |
| SMU | Singapore Management University | In English | → Economics → Higher education, universities |
| SMVP | Shuttle Master Verification Plan | In English | → Quality management → Spaceflight engineering, astronautics |
| SMVRD | Shuttle Master Verification Requirements Document | In English | → Quality management → Spaceflight engineering, astronautics |
| SOARS | Shuttle Operation Automated Reporting System | In English | → Knowledge management → Spaceflight engineering, astronautics |
| SOCAR | Shuttle Operational Capability Assessment Report | In English | → Quality management → Spaceflight engineering, astronautics |
| SOGEP | Société Générale de Prestations | In French | → Maintenance and logistics |
| SOLAP | Spatial On Line Analytical Processing | In English | → Knowledge management → Data |
| SOP | Standard Operating Procedures | In English | |
| SOR | Specific Operational Requirement | In English | |
| SOR | Specification Operational Requirement | In English | |
| SOS | Source Of Supply | In English | → Maintenance and logistics |
| SPC | Shipping and Packing Cost | In English | → Maintenance and logistics → Prices |
| SPCS | Service and Performance Checkout System | In English | → Quality management |
| SPEARS | Supplier Performance Evaluation and Rating System | In English | → Quality management |
| SPFA | Single-Point Failure Analysis | In English | → Quality management |
| SPFL | Single-Point Failure List | In English | → Quality management |
| SPFM | Single-Point Failure Mode | In English | → Quality management |
| SPFP | Single-Point Failure Potential | In English | → Quality management |
| SPIMS | Shuttle Program Information Management System | In English | → Knowledge management → Spaceflight engineering, astronautics |
| SPL | Serialized Parts List | In English | → Maintenance and logistics |
| SPM | Subsystem Project Manager | In English | |
| SPM | Standard Parts Manual | In English | → Maintenance and logistics |
| SPO | Spare Parts Order | In English | → Maintenance and logistics |
| SPO | Special Projects Office | In English | |
| SPOM | STS Planning and Operations Management | In English | |
| SPPL | Spare Parts Provisioning List | In English | → Maintenance and logistics |
| SPR | Subcontractor Performance Review | In English | → Quality management → 3474 |
| SPR | Software Problem Report | In English | → Software → Quality management |
| SPRD | System Performance Requirements Document | In English | → Quality management |
| SPUR | Separate Parts Usage Record | In English | → Maintenance and logistics |
| SQ | Système Qualité | In French | → Quality management |
| SQA | Subcontractor Quality Assurance | In English | → Quality management → 3474 |
| SQA | Software Quality Assurance | In English | → Software → Quality management |
| SQC | Statistical Quality Control | In English | → Quality management |
| SQE | Supplier Quality Evaluation | In English | → Quality management |
| SQE | Software Quality Evaluation | In English | → Software → Quality management |
| SQEP | Software Quality Evaluation Plan | In English | → Quality management |
| SQH | Supplier Quality History | In English | → Quality management |
| SQMS | Scottish Quality Management System | In English | |
| SR&PA | Safety, Reliability, And Product Assurance | In English | → Quality management |
| SR&Q | Safety, Reliability, And Quality | In English | → Quality management |
| SR&QA | Safety, Reliability, And Quality Assurance | In English | → Quality management |
| SRH | Subsystem Requirements HAndbook | In English | → Quality management |
| SRH | System REquirements HAndbook | In English | → Quality management |
| SRM | Specification Requirements Manual | In English | → Quality management |
| SRM | Storage Resource Management | In English | → Knowledge management |
| SRM | Supplier Relationship Management | In English | → Maintenance and logistics |
| SRP | Standard Repair Procedure | In English | → Maintenance and logistics |
| SRR | Software Requirements Review | In English | → Software → Quality management |
| SRR | System Requirements Review | In English | → Quality management |
| SRR | Specification Readiness Review | In English | → Quality management |
| SRS | Software Requirements Specification | In English | → Software → Quality management |
| SRS | Specification Review Sheet | In English | → Quality management |
| SRS | Specification Revision Sheet | In English | → Quality management |
| SRSR | Schedule and Resources Status Report | In English | |
| SRT | Shuttle Requirements Traceability | In English | → Quality management → Spaceflight engineering, astronautics |
| SRT | System Readiness Test | In English | → Quality management |
| SRT | System Requirements Test | In English | → Quality management |
| SRT | Specification Requirements Table | In English | → Quality management |
| SSAD | System Summary Acceptance Document | In English | → Quality management |
| SSIS | Space Station Information System | In English | → Knowledge management → Spaceflight engineering, astronautics |
| SSMB | Space Shuttle Maintenance Baseline | In English | → Maintenance and logistics → Spaceflight engineering, astronautics |
| SSMS | Sessional Staff Management System | In English | → Personnel management |
| SSPM | Standards and Procedures Manual | In English | → Quality management → Standardization |
| SSPM | Space Shuttle Program Manager | In English | → Spaceflight engineering, astronautics |
| SSPM | System Safety Program Manager | In English | |
| SSPPSG | Space Shuttle PAyload Planning Steering Group | In English | → Spaceflight engineering, astronautics |
|