| QA | Quality Assurance |
| QAL | Quality Assurance Library |
| QAM | Quality Assurance Manager |
| QAP | Quality Assurance Plan |
| QAR | Quality Assurance Representative |
| QAS | Quality Assurance Specialist |
| QBR | Query Based Report |
| QC | Quality Control |
| QCI | Quality Conformance Inspection |
| QCM | Quartz Crystal Microbalance |
| QE | Quality Engineer |
| QFM | Quality Functional Manual |
| QI | Quality Indicator |
| QML | Qualified Manufacturer's List |
| QMORPH | Quick Morphing algorithm |
| QMP | Quality Management Plan |
| QMP | Quantitative Management Plan |
| QMS | Quality Management System |
| QMORPH | Quick Morphing algorithm |
| QoS | Quality of Service |
| QPE | Quantitative Precipitation Estimate |
| QPL | Qualified Parts List |
| QPSK | Quadrature Phase-Shift Keying |
| QRO | Quality Requirements Outline |
| QSA | Qualification Status Assessment |
| QSAB | Qualification Status Assessment Board |
| QSAM | Quality Systems Audit Manual |
| QSR | Quarterly Status Review |
| QST | Qualification System Test |