| QDT | Quiet Drive Technology | 安静驱动器技术 |
| QDT | Quintessence of Dental Technology | 牙科技术精华 |
| QDT | Qualitative Decision Theory | 定性决策理论 |
| QDT | Quality Diecast Toys | 优质压铸玩具 |
| QDT | Are you flying in VFR weather conditions? | 您是否在VFR天气条件下飞行？ |
| QDT | Qualified Domestic Trust (estate planning) | 合格国内信托（遗产规划） |
| QDT | Quantum Dental Technologies (Toronto, ON, Canada) | Quantum Dental Technologies（加拿大安大略省多伦多） |
| QDT | Data (File Name Extension) | 数据（文件扩展名） |
| QDT | Quantum-Defect Theory | 量子缺陷理论 |
| QDT | Quantum- Defect Theory | 量子缺陷理论 |