| Abbreviation | Definition |
|---|---|
| LIXU | Crosstrade Shipping Ltd. |
| LJIX | Brown Trailer Incorporated |
| LKO | Lucknow Charbagh Railway Station |
| LKRR | Little Kanawha River Rail |
| LKRR | Little Kanawha River Rail Incorporated |
| LKWR | Lackland Western Railroad |
| LKWR | Lackland Western Railroad Company |
| LL | Poplar River Mine Railroad |
| LLCX | LLCX Inc. |
| LLCX | LLCX Incorporated |
| LLIX | LUC Leasing |
| LLIX | Services Unlimited |
| LLKX | Needham Transportation |
| LLLX | Louisiana Leasing Limited Of Illinois |
| LLPX | Locomotive Leasing Partners |
| LLPX | Locomotive Leasing Partners LLC |
| LLRT | Lusail Light Rail Transit |
| LM | Litchfield and Madison Railway (Union Pacific Railroad) |
| LM | Union Pacific Railroad Company |
| LMCU | World Container Leasing |