| QDD | Quick Disability Determination (Social Security) | 快速残疾判定(社会保障) |
| QDD | Quality, Dedication, Determination (swim team) | 质量、奉献、决心(游泳队) |
| QDD | Quality Document Development | 质量文件编制 |
| QDD | Quality Development Division | 质量发展部 |
| QDD | Quality Design And Development | 质量设计与开发 |
| QDD | Quality Document Developer | 质量文档开发人员 |
| QDD | Quantity Demanded (economics) | 所需数量(经济) |
| QDD | Quantico Devil Dolphins (swim team) | Quantico魔鬼海豚(游泳队) |
| QDD | Quick Data Dictionary | 快速数据字典 |
| QDD | Quaternary-valued Decision Diagram | 四值决策图 |