| FDD | Floppy Disk Driver | 软盘驱动器 |
| FDD | Frequency Division Duplex | 分类多任务方式 |
| FDD | Frequency Division Dual | 频分双工 |
| FDD | Floating Drydock | 浮动干船坞 |
| FDD | Federated Department Stores, Inc., of Delaware (delisted) | 特拉华联邦百货公司（退市） |
| FDD | Cit Group, Inc. (formerly CIT) | Cit Group，Inc.（前身为Cit） |
| FDD | Fault Detection Diagnosis | 故障检测诊断 |
| FDD | Foreign Demand Draft | 国外即期汇票 |
| FDD | Fault Detection Diagnostic | 故障检测诊断 |
| FDD | Fixed Disk Drive | 固定磁盘驱动器 |
| FDD | Fictional Digimon And Digidestined | 虚构的数字和数字 |
| FDD | Floating Digital Drive | 浮动数字驱动器 |
| FDD | Flight Dynamics Division | 飞行动力学部 |
| FDD | Facility Design Description | 设施设计说明 |
| FDD | Fast Direct Display | 快速直接显示 |
| FDD | Flexible Delivery Development (Sprint) | 灵活交付开发（Sprint） |
| FDD | Functional Decomposition Diagram | 功能分解图 |
| FDD | Formal Domain Definition | 正式域定义 |
| FDD | Functional Description Document | 功能描述文件 |
| FDD | Foundation for the Defense of Democracies | 捍卫民主政体基金会 |
| FDD | Family Double Dare (TV show) | 家庭双人挑战（电视节目） |
| FDD | Financial Data Disseminator | 财务数据分析者 |
| FDD | Foreign Documents Division | 外国文件处 |
| FDD | Freezing Degree Days | 冻结度天数 |
| FDD | Farm Ditch Density | 农场沟渠密度 |
| FDD | Forces for the Defense of Democracy (Burundi) | 捍卫民主力量（布隆迪） |
| FDD | Food and Drug Directorate | 食品药品管理局 |
| FDD | Feature Driven Development | 功能驱动开发 |
| FDD | Feature-Driven Development (software development methodology) | 特征驱动开发（软件开发方法） |
| FDD | Final Delivery Date | 最终交付日期 |
| FDD | Functional Decision Diagram | 功能决策图 |
| FDD | Fisheries Development Department | 渔业发展部 |
| FDD | Feature-Driven Development | 功能驱动开发 |
| FDD | Floppy Disk Drive | 软盘驱动器 |
| FDD | Functional Design Document | 功能设计文件 |
| FDD | Force Design Directorate | 部队设计局 |
| FDD | Force Design and Development | 部队设计与开发 |
| FDD | Forum for Democracy and Development (Zambia) | 民主与发展论坛（赞比亚） |
| FDD | First Digitized Division | 第一数字化部门 |
| FDD | Functional Decomposition Design | 功能分解设计 |
| FDD | Flexible Disk Drive | 软盘驱动器 |
| FDD | Force Design Division | 部队设计处 |
| FDD | Familial Danish Dementia | 家族性丹麦痴呆症 |
| FDD | Frequency of Drinking Days | 饮酒日频率 |