| Abbreviation | Definition |
|---|---|
| LPN | Longview Portland and Northern Railway Company |
| LPN | Longview, Portland and Northern Railway |
| LPRR | Lincoln Pacific Railway |
| LPRU | Losinjska Plovidba Mali Losing |
| LPSG | Live Oak, Perry and South Georgia Railway |
| LPSR | London & Port Stanley Railway |
| LPTU | Lanport |
| LRAX | Latinoamerican Railroad Association |
| LRAX | Latinoamerican Railroad Association Incorporated |
| LRC | Long Rail Carrier |
| LRCX | Livingston Rebuild Center |
| LRCX | Livingston Rebuild Center Incorporated |
| LRDX | MidAmerican Energy |
| LRDX | MidAmerican Energy Company |
| LRIX | Lake Superior Eastern Rail Industries |
| LRJ | Lundby-Romele Järnväg (Lundby-Romele Railroad) |
| LRK | Little Rock Amtrak Station |
| LRLX | Evans Railcar Leasing (GE Rail Services Corporation) |
| LRLX | General Electric Railcar Services Corporation |
| LRMC | Light Rail Manila Corporation |