| Abbreviation | Definition |
|---|---|
| QCS | Quality Control Supervisor |
| QCSW | Qualified Clinical Social Worker |
| QCT | Quality Control Tool |
| QCU | Quality Control Unit |
| QCV | Quick Coupling Valve |
| QCW | Quality Control Workstation |
| QCW | Quality Control Work |
| QD | Quick Disconnect |
| QDA | Quick Defect Analysis |
| QDD | Quality Document Developer |
| QDD | Quality Document Development |
| QDE | Questioned Document Examiner |
| QDF | Quadruple Point Failure |
| QDG | Quality Design Group |
| QDP | Quality Documentation Proposal |
| QDR | Qualification Design Review |
| QDR | Quality Deficiency Report |
| QDS | Quality Data System |
| QDS | Quick and Dirty Solution |
| QE | Quality Engineer |
| QEC | Quick Engine Change |
| QEC | Quality Endorsed Company |
| qed | quod erat demonstrandum (which was to be proved) |
| QEF | quod erat faciendum (which was to be done) |
| QEI | quod erat inveniendum (which was to be found) |
| QEO | Quality Evaluation Organization |
| QEO | Quality Evaluation Officer |
| QEP | Quality Environmental Professional |
| QEQ | Quality Evaluation Questionnaire |
| QET | Quality Engineering Technology |
| QF | Quit Function |
| QFA | Qualified Financial Advisor |
| QFE | Quick - Fix Engineering |
| QFO | Qualification For Operation |
| QFP | Qualified Financial Planner |
| QGE | Quantitative Genetic Epidemiology |
| QGS | Quantity Gaging System |
| QHI | Qualified Helicopter Instructor |
| QHM | Queens Harbour Master |
| QHP | Qualified Hardware Professional |
| QHP | Qualified Health Professional |
| QHP | Qualified Handicapped Professional |
| QHP | Qualified Horary Practitioner |
| QI | Quit If |
| QI | Qualified Intermediary |
| QIA | Quality Inspection Agent |
| QIA | Quality Improvement Administrator |
| QIA | Quality Improvement Agent |
| QIB | Qualified Institutional Buyer |
| QIC | Quarter - Inch Cartridge |