| FDB | fluid-dynamic bearings | 动态轴承 |
| FDB | method fixed rate on declining balance method | 定率递减余额折旧法 |
| FDB | Fluid Dynamic Bearing | 流体动力轴承 |
| FDB | Form Double Byte | 形成双字节 |
| FDB | Fizzy Drinks Bottle | Fizzy饮料瓶 |
| FDB | Fire Down Below | 向下开火 |
| FDB | Federal DataBase | 联邦数据库 |
| FDB | Fast Doppler Block | 快速多普勒闭塞 |
| FDB | Fællesforeningen for Danmarks Brugsforeninger (Danish Co-operative Wholesale Society) | Fællesforeningen for Danmarks Brugsforeninger (Danish Co-operative Wholesale Society) |
| FDB | Fluid Dynamic Bearing (hard disk technology) | 流体动态轴承（硬盘技术） |
| FDB | Flexor Digitorum Brevis | 短指屈肌 |
| FDB | Functional Description of the Battlefield | 战场功能描述 |
| FDB | Full Data Block | 完整数据块 |
| FDB | Fahrenheit Dry Bulb | 华氏干球 |
| FDB | Film Deposit Box | 胶片存放箱 |
| FDB | First Data Bank | 第一数据库 |
| FDB | Flight Data Block | 飞行数据块 |
| FDB | Field Data Book | 现场数据手册 |
| FDB | Feature Data Block | 要素数据块 |
| FDB | Failure Distance Biasing | 故障距离偏置 |
| FDB | Font Definition Block (Macromedia Flash SWF file) | 字体定义块（Macromedia Flash SWF文件） |
| FDB | Force Draft Blower | 强制通风鼓风机 |
| FDB | Force Development Branch | 部队发展处 |
| FDB | Forum for Democracy in Burma | 缅甸民主论坛 |
| FDB | Forwarding Database | 转发数据库 |
| FDB | Fibrocystic Disease of the Breast | 乳腺纤维囊性疾病 |