| Abbreviation | Definition |
|---|---|
| QSS | Quadrant Subscription Service |
| QSS | Quality System Solutions |
| QSS | Quality Systems & Software |
| QSS | Qualitynet Service Selector |
| QSS | Quartier Software Services |
| QST | Quality Security Training |
| QST | Quick Service Textiles |
| QSU | Quality Science Universal |
| QSU | Quality Sportsclubs in Uxbridge |
| QSV | Quality Sound Vision |
| QSV | Quality Sound & Vision |
| QSX | Quality Software eXpert Kft. |
| QT | Quest Tech |
| QTA | Queensland Trucking Association |
| QTB | Quality Technical Books |
| QTB | Quality Transparent Bag |
| QTC | Quality Technology Company |
| QTC | Quality Transmission Components |
| QTC | Queensland Theatre Company |
| QTC | Queensland Treasury Corporation |