| Abbreviation | Definition |
|---|---|
| QTMI | Quarter Mining Corp. |
| QTNTE | Quick Tent, Inc. |
| QTRN | QUINTILES Transnational Corporation |
| QTTKE | Quantum Technology Corporation |
| QTTM | Quantitative Methods Corporation |
| QTTME | Quantitative Methods Corporation |
| QUADE | Quadrex Corporation |
| QUDT | Quadratech, Inc. |
| QUES | Quest Solution, Incorporated |
| QUES | Questa Oil and Gas Company |
| QUIK | Quicklogic, Corporation |
| QUILE | Quill Industries, Inc. |
| QUIP | Quipp, Inc. |
| QUITF | Quinto Mining Corporation |
| QUIX | Quixote Corporation |
| QUIZ | Quiznos Corporation |
| QUMI | Quamtel, Inc. |
| QUOT | Quotesmith.Com, Inc. |
| QUST | Questron Technology, Inc. |
| QUSTU | Questron Technology, Inc. |