| Abbreviation | Definition |
|---|---|
| QFD | Quick Fill Device |
| QFH | Qmark Forced-air Heaters |
| QFH | Quality Fuse Holder |
| QFH | Quinstar Filter, Highpass |
| QFHD | Quad Full High Definition |
| QFL | Quinstar Filter, Lowpass |
| QGV | Quick Grip Vise |
| QHP | Quality Horse Products |
| QKB | Quality Knowledge Base |
| QKP | Qualitätswein Kabinett Prädikatswein |
| QL | Quick Lube |
| QLA | Quality Level Agreement |
| QLC | Q Light Controller |
| QLM | Quality Solids Separation - Linear Motion Shaker |
| QLN | Quinstar Low Noise Amplifier |
| QLP | Quality Logo Products |
| QLR | Quick Lock Release |
| QLRS | Quick Lock Release System |
| QLT | Q-Logic Single 12" Truck Box |
| QLW | Quick-Link Wall Mount |