| Abbreviation | Definition |
|---|---|
| FCTX | Farmers Commodities Transportation |
| FCTX | Farmers' Commodities Transportation |
| FD | Front Derailleur |
| FDDM | Fort Dodge, Des Moines and Southern Railway (Union Pacific Railroad) |
| FDDM | Union Pacific Railroad Company |
| FDMA | Ferrocarril de Minatitlan al Carmen |
| FDPU | Del Monte Fresh Produce |
| FDSU | Foodsource |
| FDSU | Foodsource Incorporated |
| FDSZ | Foodsource |
| FDSZ | Foodsource Incorporated |
| FDXU | Fedex Freight |
| FEC | Florida East Coast Railway |
| FEC | Florida East Coast Railway Company |
| FECU | Yamashita-Shinnihon Line |
| FECZ | Florida East Coast Railway |
| FECZ | Florida East Coast Railway Company |
| FEF | Four Eight Four |
| FEIX | Farmers Elevator |
| FEIX | Farmers Elevator Incorporated of Grace City |