| Rank | Abbreviation | Meaning |
|---|
| ***** | FDCS | Flight Deck Communication System (an/src-47)
| |
| ***** | FDCS | First Day Covers and Special
| |
| **** | FDCS | Field Data Collection System
| |
| **** | FDCS | Flight Data Communications Specialist
| |
| **** | FDCS | Fire Direction Centers
| |
| **** | FDCS | Flight Director Control School
| |
| **** | FDCS | Frederick Douglass Christian School
| |
| **** | FDCS | Federal Drug Control Service
| |
| **** | FDCS | Follicular Dendritic Cell Sarcoma
| |
| *** | FDCS | First Day Covers
| |
| *** | FDCS | follicular dendritic cells
| |
| *** | FDCS | Future Development Computer Services
| |
| *** | FDCS | Floppy Disk Controllers
| |
| ** | FDCS | First Day Covers Stamps
| |
| ** | FDCS | Feeder Dispatch Control System
| |
| ** | FDCS | follicular dendritic reticulum cells
| |
| ** | FDCS | Flight Data Control Specialist
| |
| ** | FDCS | Forage Dynamitage Côte-Sud
| |
| ** | FDCS | Fort Dodge Choral Society
| |
| ** | FDCS | Fuel Delivery Command Signal
| |
| ** | FDCS | Flow Duration Curves
| |
| * | FDCS | Family Designs Consulting Services
| |
| * | FDCS | Fixed-dose combinations
| |
| * | FDCS | Fuel Delivery Control Signal
| |
| * | FDCS | Fully Differential Cross Sections
| |