| Acronym | Definition |
|---|
| QSS | Quasi Split Sound |
| QSS | Quote Support System |
| QSS | Quasi-Steady-State (thermal conductivity) |
| QSS | Quality Software Systems (various locations) |
| QSS | Quantitative Scoring System (psychological assessment) |
| QSS | Quintessential School Systems |
| QSS | Quality Security Services (various locations) |
| QSS | Quick Start Sales |
| QSS | Working Frequency (radiotelegraphy) |
| QSS | Quality Systems and Software |
| QSS | Quick Service System |
| QSS | Quality Surveillance System |
| QSS | Quality Systems Support |
| QSS | Quick Slide Show (software) |
| QSS | quasi-stellar source (radio source) |
| QSS | Quick Supply Store |
| QSS | Qwest Software Services (Qwest Communications) |
| QSS | QuickBooks Site Solutions (Intuit) |
| QSS | Quantum Streaming Segment |
| QSS | Quebec Speleological Society |