| Acronym | Definition | External Links | |
| Q |
Queue |
 |
| QA |
Quality Assurance |
|
| QA |
Queue Arbitrated |
|
| QAF |
Q Adapter Function |
|
| QAM |
Quadrature Amplitude Modulation |
|
| QAS |
Quasi - Associated Signaling |
|
| QBE |
Query-By-Example |
|
| QBIC |
Query By Image Content |
|
| QBIT |
Qualified Bit |
|
| QBM |
Query By Model |
|
| QC |
Quality Control |
|
| QD |
Queuing Delay |
|
| QDSS |
Q-Bus Dragon Sub-System |
|
| QFA |
Quick File Access |
|
| QFE |
Quick Fix Engineering |
|
| QFP |
Quad Flat Pack |
|
| QHD |
Quarter High-Definition (usually as qHD) |
|
| QIC |
Quarter Inch Cartridge |
|
| QISAM |
Queued Indexed Sequential Access Method |
|
| QLLC |
Qualified Link Level Control / Qualified Logical Link Control |
|
| QM |
Quality Management |
|
| QM |
Quality Monitoring |
|
| QMP |
Quality Measurement Plan |
|
| QMS |
Quality Micro Systems |
|
| QND |
Quantum Network Design |
|
| QOH |
Quantity On Hand |
|
| QOPE |
Query Optimization in a Protective Environment |
|
| QOR |
Query on Release (usually as QoR) |
|
| QOS |
Quality Of Service (sometimes as QoS) |
|
| QP |
Quattro Pro |
|
| QPA |
Quality Program Analysis |
 |
| QPSK |
Quadrature Phase Shift Keying |
|
| QPSX |
Queued Packet and Synchronous circuit eXchange |
|
| QR |
Quick Response (as in QR Code, 2D barcode format) |
|
| QRSS |
Quasi Random Signal Source |
|
| QSAM |
Queued Sequential Access Method |
|
| QSS |
Quality Solution System / Quality Surveillance System |
|
| QT |
Qualification Test |
|
| QT |
Quick Time |
|
| QTAM |
Queued Telecommunications Access Method |
|
| QTML |
QuickTime Media Layer |
|
| QTVR |
QuickTime Virtual Reality |
|
| QVSS |
Q-Bus Viper Sub-System |
|
| QWAVE |
Quality Windows Audio/Video Experience (usually as qWAVE) |
 |
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|
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| QWEST |
Quantum-Well Envelope State Transition |
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