| 1 | SRS | Selkirk Remote Sensing Ltd. | Callsign: Photo Charlie, | CDN | AVCODES |
| 2 | SRS | Southern Sky Airlines | IATA: IH, Callsign: Sky South, Subsidary of SCAT Airlines. | KZ | AVCODES |
| 3 | SRS | Selkirk Remote Sensing | | | ICAO1 |
| 4 | SRS | SRS Railservice GmbH | Krumbach (SRS = Scherer Rail Service) | D | privat-bahn.de |
| 5 | SRS | Süddeutsche Railservice GmbH | Kaiserslautern | D | privat-bahn.de |
| 6 | SRS | SPERRY RAIL SERVICE | | | PWRC |
| 7 | SRS | Sperry Rail Service | | USA | TRAFFIC |
| 8 | SRS | SRS Rail Servis GmbH | | DE | VKM |
| 9 | SRSEU | Sperry Rail | | UK | VKM |
| 10 | SRSF | SARSFIELD TRANSPORT INC | | | SCAC4 |
| 11 | SRSG | SCHAEFER, S R TRUCKING LLC | | | SCAC4 |
| 12 | SRSJ | SCOTT RELOCATION SERVICES INC | | | SCAC4 |
| 13 | SRSN | SORENSEN MOVING & STORAGE CO INC | | | SCAC4 |
| 14 | SRSO | SUNRISE TRANSPORT INC | | | SCAC4 |
| 15 | SRSP | SYDENHAM RECYCLING & SCRAP LTD | | | SCAC4 |
| 16 | SRSR | SPERRY RAIL SERVICE | | | SCAC4 |
| 17 | SRSS | SUDDATH RELOCATION SYSTEMS (SUDDATH | | | SCAC4 |
| 18 | SRSU | SEA-ROAD SHIPPING S.A. MIAMI FL | | | PWRC |
| 19 | SRSU | Sea-Road Shipping SA Miami FL | | | RSRV |
| 20 | SRSU | SRS INTERMODAL LEASING LLC | | | SCAC4 |
| 21 | SRSV | S & R TRANSPORT SERVICE INC | | | SCAC4 |
| 22 | SRSVN | Schenker | | SI | VKM |
| 23 | SRSW | SRS-2 INC | | | SCAC4 |
| 24 | SRSX | Sperry Rail Service | 7/2000-7/2005 (not listed) | | NAKINA |
| 25 | SRSX | Sperry Rail Service | Jul-00 | | NRHS |
| 26 | SRSX | *SPRING RIDGE RAIL SERVICES | | | PWRC |
| 27 | SRSX | +SPERRY RAIL SERVICE | | | PWRC |
| 28 | SRSX | Sperry Rail Service | | | RSRV |
| 29 | SRSX | SPERRY RAIL SERVICE | | | SCAC4 |
