| Abbreviation | Definition |
|---|---|
| MOLX | Internation Molasses Corporation Limited |
| MOLX | International Molasses Corporation |
| MON | CSX Transportation Incorporated |
| MON | Monon Railroad (CSX Transportation) |
| MONU | Monsanto |
| MONX | Monsanto |
| MONX | Solutia Incorporated |
| MOPZ | Flexi-Van Leasing |
| MORZ | Mitsui O. S. K. Lines Limited |
| MORZ | Mitsui O.S.K. Lines |
| MOSX | Mosinee Paper Corporation |
| MOSZ | Mitsui O. S. K. Lines Limited |
| MOSZ | Mitsui O.S.K. Lines |
| MOT | Marine Oil Transportation |
| MOT | Middletown, Odessa, and Townsend |
| MOTC | Montreal Tramways |
| MOTU | Monsanto |
| MOTX | Museum of Transportation |
| MOTZ | Mitsui O. S. K. Lines Limited |
| MOTZ | Mitsui O.S.K. Lines |