| Abbreviation | Definition |
|---|---|
| QQO | Quasi- Quadrennial Oscillation |
| QRE | Quick-Reaction Estimate |
| QRI | Quick-Reaction Integration |
| QRIA | Quick-Reaction Integration Activity |
| QRM | Quantitative Risk Management |
| QRP | Quick Release Plate |
| QRS | Quick-Reaction Sortie |
| QRSL | Quick-Reaction Space Laboratory |
| QSA | Qualification Site Approval |
| QSGVT | Quarter Scale Ground Vibration Test |
| QSL | Qualified Source List |
| QSM | Quarter Scale Model |
| QSMVT | Quarter Scale Model Vibration Testing |
| QSS | Quindar Scanning System |
| QSU | Quality and Standards Unit |
| QT | Quality And Technology |
| QTF | Quick Turnaround Facility |
| QTP | Qualification Test Plan |
| QTR | Qualification Test Report |
| QTRS | Quarters |