| MDD | Mineral Deposits Division (Geological Association of Canada) | 矿床部（加拿大地质协会） |
| MDD | Medical Device Directive | 医疗器械指令 |
| MDD | Meteorological Data Distribution | 气象数据分布 |
| MDD | Minimum Distance Decoding | 最小距离解码 |
| MDD | Maximum Daily Dose | 每日最大剂量 |
| MDD | MacDonald-Detweiler | 麦克唐纳·德特维勒 |
| MDD | Major Depressive Disorder | 严重抑郁症 |
| MDD | Mine Detection Dog | 地雷探测犬 |
| MDD | Multi Domain Diffusion | 多域扩散 |
| MDD | Model-Driven Development (software engineering) | 模型驱动开发（软件工程） |
| MDD | Melting Degree Days | 熔化度天数 |
| MDD | Movement for Democracy and Development (Central African Republic) | 民主与发展运动（中非共和国） |
| MDD | Maine Driving Dynamics | 缅因州驾驶动力学 |
| MDD | Material Delivery Date | 材料交付日期 |
| MDD | Mission Description Document | 任务描述文件 |
| MDD | Material Data Document | 材料数据文件 |
| MDD | Mirrored Drive Door (Apple Power Mac) | 镜像驱动器门（Apple Power Mac） |
| MDD | Mechanical Dough Development | 机械面团开发 |
| MDD | Model Device Driver | 模型设备驱动程序 |
| MDD | Major Design Decision | 主要设计决策 |
| MDD | McDonnell Douglas | 麦道公司 |
| MDD | Membership Development Director | 会员发展总监 |
| MDD | Montana Dangerous Drug | 蒙大拿州危险药物 |
| MDD | Maintenance Deferred Defect | 维护延期缺陷 |
| MDD | Mal De Debarquement Syndrome | Mal de Debarquement综合征 |
| MDD | Multi Domed Daemon | 多域守护程序 |
| MDD | Millennium Dawn Designs | 千禧黎明设计 |
| MDD | Medical Devices Directive | 医疗器械指令 |
| MDD | Mineral Deposits Division | 矿床部 |
| MDD | Meaning Definition Document | 含义定义文件 |
| MDD | Mirrored Disk Drive | 镜像磁盘驱动器 |
| MDD | Mirrored Drive Door | 镜像驱动器门 |
| MDD | Matson, Driscoll & Damico, LLP | 德瑞斯科和Damico马生,,引导 |
| MDD | Maintenance Due Date | 规定的保养日期 |
| MDD | Multiple-valued Decision Diagram (generalized version of Binary Decision Diagram) | 多值决策图（二进制决策图的广义版本） |
| MDD | Marque de Distributeur (French: private brand) | Marque de Distributeur（法语：自有品牌） |
| MDD | Manic-Depressive Disorder (now called Bipolar Disorder) | 躁狂抑郁症（现称双相情感障碍） |
| MDD | Maximum Dry Density (construction) | 最大干密度（施工） |
| MDD | Multi-Dimensional Databases (computing) | 多维数据库（计算） |
| MDD | Mate Demate Device (places Space Shuttle on/off 747 carrier aircraft) | Demate装置(地方交配的太空飞船/关闭747载机) |
| MDD | Multiple Differential Detection | 多重差分检测 |
| MDD | Maintenance Data Documentation | 维护数据文件 |
| MDD | Management Division Director | 管理处处长 |
| MDD | Mode Description Document | 模式描述文档 |
| MDD | mean density of droplets deposited | 沉积液滴的平均密度 |
| MDD | microdouble diffusion test | 微双扩散试验 |
| MDD | Mirror Drive Doors | 后视镜驱动车门 |
| MDD | manic-depressive disorder | 躁郁症 |
| MDD | Making Digits Dance | 让数字跳舞 |
| MDD | mean day of death | 平均死亡日 |
| MDD | Millennium Dynamic Deformer | Millennium动态变形器 |
| MDD | A Medical Data Drill | 医疗数据演练 |