| Abbreviation | Definition |
|---|---|
| QLK | Quik Link Software |
| QLM | Quantum Leap Management |
| QLN | Quality Leaders Network |
| QLO | Quality of Life in Ontario |
| QLO | QuantumLynx Office |
| QLP | Quality Leisure in Poole |
| QLP | Quality Logo Products, Inc. |
| QLR | Quechee Lakes Resorts, Quechee, Vermont |
| QLS | Quality Logistics Systems |
| QLS | QuickLabel Systems |
| QLSD | Quik Link Software Development Company |
| QLT | Quantum Leap Technology |
| QM | Quality Manchester |
| QM | Quick Multiple Services, Miami, Florida |
| QMA | Quality Model Autos |
| QMB | Queensland Mortgage Bureau |
| QMC | Quantum Materials Corp |
| QMD | Quality Management Division |
| QME | Quantum Marine Engineering |
| QMEB | Quality Mobile Electronics Brand |