| Acronym | Definition |
|---|
| QS | Quality System |
| QS | Quantity Surveyor |
| QS | Quick Scope (Call of Duty) |
| QS | Quick Start |
| QS | Quality Standard (various companies) |
| QS | Quicksilver |
| QS | Qualitätssicherung (German: Quality Assurance) |
| QS | Quacquarelli Symonds (est. 1990) |
| QS | Quality Service(s) |
| QS | Quantified Self |
| QS | Quit Smoking |
| QS | Québec Solidaire (Canada political party) |
| QS | QuikSilver Inc (boarding company) |
| QS | Quality Surveillance (US DoD) |
| QS | Quorum Sensing |
| QS | Quantity Supply |
| QS | Quality Starts (baseball) |
| QS | Quick Strike |
| QS | Quick Shift (Campagnolo bicycle shifter) |
| QS | Quality Start (baseball gaming) |
| QS | Quality Start (baseball; start by a pitcher of 6+ innings & 3 runs or fewer) |
| QS | Quantity Sufficient |
| QS | Quartersawn (cutting lumber from logs to yield grain at approx 90* to face of board) |
| QS | Quota Share |
| QS | Quasi-Static |
| QS | Quadratic Sieve (method of factoring integers) |
| QS | Quasi-Synchronous |
| QS | Qualification Sample |
| QS | Quantum Sufficit (Latin: as much as suffices) |
| QS | Quantum Sufficiat (Latin: sufficient quantity; on a prescription, indicates quantity is left to the dispenser's discretion) |
| QS | Quota Sample |
| QS | Quickbooks Specialist |
| QS | Quarter Session |
| QS | Qualitative State |
| QS | Quality Scalability |
| QS | Queen Scout (Australia) |
| QS | QuickStack |
| QS | Quarternary Structure |
| QS | Queens Surface |
| QS | Québec Secours (Canada) |
| QS | Quota Source |
| QS | Quantity Spilled |
| QS | Body Heat Storage Index |