| Abbreviation | Definition |
|---|---|
| FOCUS | Families OverComing Under Stress Family Resiliency Training |
| FOCUS-PDCA | Find-Organize-Clarify-Understand-Select-Plan-Do-Check-Act |
| FOD | Field Operations Division |
| FOD | Forces Of Destruction |
| FOD | Foreign Object Damage |
| FODL | Fiber Optics Data Link |
| FOE | Follow-on Operational Evaluation |
| FOF | Force On Force |
| FOFA | Follow On Forces Attack |
| FOFA | Follow- On Forces Attack |
| FOFW | Fiber Optic Field Wire |
| FOG | Fats, Oils, and Grease |
| FOG | Fiber Optic Guided |
| FOG | Fiber Optic Gyro |
| FOG | Field Operations Guide For Disaster Assessment and Response |
| FOG-D | Fiber Optics Guidance-Development/Demonstration |
| FOGM | Fiber Optic Guided Missile |
| FOG-M | Fiber Optic Guided Missile |
| FOG-S | Fiber Optic Guided-Skipper |
| FOG-X | Fiber Optic Guidance-X |