| 1 | RMM | AiRom 2000 S.R.L. | Callsign: Airom Flyer, Ceased operations. | RO | AVCODES |
| 2 | RMMB | R & M MOBILE HOME MOVERS | | | SCAC3 |
| 3 | RMMC | RADIGAN & MCGILLY MOVING & STORAGE | | | SCAC3 |
| 4 | RMMC | ROMERO, M & M TRANSPORT LLC | | | SCAC4 |
| 5 | RMMD | R & M MEYER | | | SCAC4 |
| 6 | RMME | ROCKY MOUNTAIN MILLWRIGHTS & MACHIN | | | SCAC3 |
| 7 | RMME | RAMIREZ MARTINEZ, ENRIQUE | | | SCAC4 |
| 8 | RMMI | Reggia Marina Militare Italiana | | I | TRAFFIC |
| 9 | RMMO | RADIGAN & MCGILLY MOVING SERVICE IN | | | SCAC3 |
| 10 | RMMO | RAMIREZ, MARIO | | | SCAC4 |
| 11 | RMMS | RAM MESSENGER SERVICE LTD | | | SCAC3 |
| 12 | RMMT | R A M TRANSPORTATION INC | | | SCAC3 |
| 13 | RMMT | ROMAN SC INC | | | SCAC4 |
| 14 | RMMU | EMERSON CLIMATE TECHNOLOGIES | | DK | BIC |
| 15 | RMMU | YORK REFRIGERATION MARINE AND CONTR | | | SCAC4 |
| 16 | RMMV | RAYS MACHINERY MOVERS | | | SCAC3 |
| 17 | RMMX | The Andersons-Rail Group | added 10/2004; 7/2005 | | NAKINA |
| 18 | RMMX | Railcar, Ltd. | added 4/1994; 7/2000; eliminated 10/2004 | | NAKINA |
| 19 | RMMX | Railcar, Ltd. | added 4/94; 7/2000 | | NRHS |
| 20 | RMMX | THE ANDERSONS-RAIL GROUP [(RMGX) RAILCAR LIMITED] | | | PWRC |
| 21 | RMMX | Railcar Limited | | | RSRV |
| 22 | RMMX | ANDERSONS INC, THE | | | SCAC4 |
