| 1 | MOT | Aeromonterrey, S.A. | Callsign: Aeromonterrey, Ceased operations on 28 February 1995. | MEX | AVCODES |
| 2 | MOT | Marine Oil Transportation | 1/1975-7/2005 | | NAKINA |
| 3 | MOT | Marine Oil Transportation | 1/75-7/2000 | | NRHS |
| 4 | MOT | MITSUI O.S.K. LINES, LTD. [MARINE OIL TRANSPORTATION] | | | PWRC |
| 5 | MOT | Marine Oil Transportation | | | RSRV |
| 6 | MOTA | MOTIA COMPAGNIA DI NAVIGAZIONE SPA | | | SCAC4 |
| 7 | MOTAB | Motala Train AB | | SE | VKM |
| 8 | MOTALA | Motala Verkstad | | S | TRAFFIC |
| 9 | MOTB | METRO TRANSPORTATION INC | | | SCAC4 |
| 10 | MOTC | Montreal Tramways | 1/1975-7/2005 | | NAKINA |
| 11 | MOTC | Montreal Tramways | 1/75-7/2000 | | NRHS |
| 12 | MOTC | MONTREAL TRAMWAYS | | | PWRC |
| 13 | MOTC | Montreal Tramways | | | RSRV |
| 14 | MOTD | MORRIS TRANSPORTATION INC | | | SCAC4 |
| 15 | MOTE | MOTOR EXPRESS INC OF IND | | | PWRC |
| 16 | MOTE | MO TRANSPORT INC | | | SCAC4 |
| 17 | MOTF | MOTT, F H FUEL OIL | | | SCAC4 |
| 18 | MOTH | MO TRUCKING INC | | | SCAC4 |
| 19 | MOTI | MOTORSHIPS INC | | | PWRC |
| 20 | MOTJ | MOORE, T J | | | SCAC4 |
| 21 | MOTK | MANDO TRANSPORT LLC | | | SCAC4 |
| 22 | MOTL | MOLNAR TANK LINES INC | | | SCAC4 |
| 23 | MOTM | M O T INTERMODAL SHIPPING INC | | | SCAC4 |
| 24 | MOTN | MO TRANSPORTATION LLC | | | SCAC4 |
| 25 | MöToJ | Malmö - Tomelilla Järnväg | 1892 - 1896 | S | svenska-lok.se |
| 26 | MOTP | MORGAN TRANSPORTATION AGENCY INC | | | SCAC4 |
| 27 | MOTR | MOTUS INC | | | SCAC4 |
| 28 | MOTU | MITSUI O.S.K. LINES LTD | | J | BIC |
| 29 | MOTU | MONSANTO (U.S.A.) | | | PWRC |
| 30 | MOTU | Monsanto | | | RSRV |
| 31 | MOTU | MITSUI O S K LINES LTD | | | SCAC4 |
| 32 | MOTW | MOTOR CARRIER LOGISTICS LLC | | | SCAC4 |
| 33 | MOTX | Museum of Transportation | 7/2000-7/2005 (not listed) | | NAKINA |
| 34 | MOTX | Museum of Transportation | Jul-00 | | NRHS |
| 35 | MOTX | *MILITARY OCEAN TERMINAL RAILROAD | | | PWRC |
| 36 | MOTX | +MUSEUM OF TRANSPORTATION | | | PWRC |
| 37 | MOTX | Museum of Transportation | | | RSRV |
| 38 | MOTY | MOBILE TRAK INC | | | SCAC4 |
| 39 | MOTZ | (MOLU) MITSUI O.S.K. LINES, LTD. | | | PWRC |
| 40 | MOTZ | Mitsui O.S.K. Lines | | | RSRV |
| 41 | MOTZ | MITSUI O.S.K. LINES, LTD. | | | SCAC4 |
