| Acronym | Definition |
|---|
| QSAS➣Qatar Sustainability Assessment System (green building certification system) |
| QSAS➣Quality Seawater Assurance Scheme (Hong Kong) |
| QSAS➣QMW (Queen Mary and Westfield College) Science Analysis System (software; UK) |
| QSAS➣Quick Start APU System (KC-135 Stratotanker) |