| 1 | SRM | Flying Swiss Ambulance Maldives (Pvt) Ltd. | | MV | AVCODES |
| 2 | SRM | Stars de Mexico, C.V. de S.A. | Callsign: Tarmex, | MEX | AVCODES |
| 3 | SRM | Strukton Railinfra Materieel | | NL | VKM |
| 4 | SRMB | SUPERIOR MOBILITY SERVICES LLC | | | SCAC4 |
| 5 | SRMC | SPEARS MATTRESS CO INC | | | SCAC4 |
| 6 | SRMD | SHERMA | | | SCAC4 |
| 7 | SRMH | STREAMLINE LOGISTICS LLC | | | SCAC4 |
| 8 | SRMI | SERVICE RM | | | SCAC4 |
| 9 | SRMJ | SERTA RESTOKRAFT MATTRESS CO INC | | | SCAC4 |
| 10 | SRMM | SCHRAM | | | SCAC4 |
| 11 | SRMO | SIERRA MOVING SYSTEMS | | | SCAC4 |
| 12 | SRMQ | SCARR MOVING & STORAGE INC | | | SCAC4 |
| 13 | SRMR | SCHROEDERM | | | SCAC4 |
| 14 | SRMS | BRAIRTOWN EXPRESS | | | SCAC3 |
| 15 | SRMT | SCRAMCO TRANSPORTATION | | | SCAC4 |
| 16 | SRMU | SICAL MULTIMODAL AND RAIL TRANSPORT | | | SCAC4 |
| 17 | SRMX | United Technologies Chemical System Division | 1/1994 (not listed) | | NAKINA |
| 18 | SRMX | Southeastern Railway Services, Inc. | 7/2005 (not listed) | | NAKINA |
| 19 | SRMX | United Technologies Chemical System Division | Jan-94 | | NRHS |
| 20 | SRMX | *UNITED TECHNOLOGIES CHEMICAL SYSTEMS | | | PWRC |
| 21 | SRMX | *SOUTHEASTERN RAILWAY MUSEUM | | | PWRC |
| 22 | SRMX | +SOUTHEASTERN RAILWAY SERVICES, INC. | | | PWRC |
| 23 | SRMX | SOUTHEASTERN RAILWAY SERVICES INC | | | SCAC4 |
| 24 | SRMY | STORMEY TRANSPORTATION INC | | | SCAC4 |
| 25 | SRMZ | SUN REFINING & MARKETING | | | PWRC |
