| 9301 | SRFP | SEA TRANSFER CORPORATION | | | SCAC4 |
| 9302 | SRFR | STARCRAFT TRANSPORTATION | | | SCAC4 |
| 9303 | SRFS | SUNRISE FREIGHT SYSTEMS INC | | | SCAC4 |
| 9304 | SRFT | SCHROEDER FREIGHT INC | | | SCAC4 |
| 9305 | SRFU | CULINA GROUP | | GB | BIC |
| 9306 | SRFX | Sapulpa Refining Co. | 8/1920 | | NAKINA |
| 9307 | SRFX | *SAPULPA REFINING CO. | | | PWRC |
| 9308 | SRFX | +SUNTRUST LEASING CORP. | | | PWRC |
| 9309 | SRFX | SUNTRUST LEASING CORPORATION | | | SCAC4 |
| 9310 | SRFY | SR FREIGHT | | | SCAC4 |
| 9311 | SRG | Search And Rescue 202 | Callsign: Rescue, | GB | AVCODES |
| 9312 | SRG | Search and Rescue 202 | | | ICAO1 |
| 9313 | SRG | Saar Rail GmbH | | DE | VKM |
| 9314 | SRGC | SHEPHERD REFRIGERATED | | | SCAC4 |
| 9315 | SRGF | SARGENT TRUCKING INC (MAINE WAY TRA | | | SCAC4 |
| 9316 | SRGG | SARGENT TRANSPORTATION LINES INC | | | SCAC4 |
| 9317 | SRGI | SAWYER, R G LTD | | | SCAC4 |
| 9318 | SRGJ | STAR LOGISTICS LLC | | | SCAC4 |
| 9319 | SRGK | STONEY RIDGE TRUCKING | | | SCAC4 |
| 9320 | SRGP | STRINGER TRANSPORTS INC | | | SCAC4 |
| 9321 | SRGQ | SARGASSO TANKER CORPORATION | | | SCAC4 |
| 9322 | SRGS | SARGENT TRANSPORT | | | SCAC4 |
| 9323 | SRGT | SUNRISE CARGO CORP | | | SCAC4 |
| 9324 | SRGU | ROSI INVEST A/S | | N | BIC |
| 9325 | SRGV | STERLING TRUCKING | | | SCAC4 |
| 9326 | SRH | Siem Reap Airways International | IATA: FT, Callsign: Siemreap Air, IATA Prefix: 084, Ceased operations on 01 December 2008. | K | AVCODES |
| 9327 | SRH | Siem Reap Airways | IATA: FT | | ICAO1 |
| 9328 | SRHA | STORE & HAUL INC | | | SCAC4 |
| 9329 | SRHD | SANCHEZ RODRIGUEZ, HUMBERTO DAVID | | | SCAC4 |
| 9330 | SRHF | SMARTRANS | | | SCAC4 |
| 9331 | SRHH | STERETT HEAVY HAULING | | | SCAC4 |
| 9332 | SRHI | SARAHTRAANS INC | | | SCAC4 |
| 9333 | SRHK | STONE, R H TRUCKING | | | SCAC4 |
| 9334 | SRHL | SURE HAUL TRANSPORTATION LTD | | | SCAC4 |
| 9335 | SRHN | SAENZ RODRIGUEZ, HERON OSVALDO | | | SCAC4 |
| 9336 | SRHO | SCOTT RICHMOND LTD | | | SCAC4 |
| 9337 | SRHP | SURNER HEATING CO INC | | | SCAC4 |
| 9338 | SRHQ | SANTA ROSALIA, HERRERIA | | | SCAC4 |
| 9339 | SRHR | SPRINT HORSE TRANSPORT | | | SCAC4 |
| 9340 | SRHW | STELLAR SHIPPING CO LLC | | | SCAC4 |
| 9341 | SRHX | SUNBELT RAILWAY HISTORICAL TRUST | | | PWRC |
| 9342 | SRI | Air Safaris And Services (NZ) Ltd. | Callsign: Airsafari, | NZ | AVCODES |
| 9343 | SRI | Air Safaris and Services | | | ICAO1 |
| 9344 | SRI | SRI Rail Invest | | D | TRAFFIC |
| 9345 | SRI | SRI Rail Invest GmbH | | DE | VKM |
| 9346 | SRIA | SEVEN R TRANSPORTATION INC | | | SCAC4 |
| 9347 | SRIB | SIROB IMPORTS INC | | | SCAC4 |
| 9348 | SRIE | SERIE-ACT PEINTURE | | | SCAC4 |
| 9349 | SRIK | SRI TRUCKING LLC | | | SCAC4 |
| 9350 | SRIL | Sri Lanka Railways | Real: SLR | CL | TRAFFIC |
| 9351 | SRIM | STAR OIL INC | | | SCAC4 |
| 9352 | SRIN | SPRING, BRUCE | | | SCAC4 |
| 9353 | SRIO | SOURIS RIVER CANOES | | | SCAC4 |
| 9354 | SRIP | SMITH, AL RIGGING INC | | | SCAC4 |
| 9355 | SRIQ | STONE RIVER INC | | | SCAC4 |
| 9356 | SRIR | SUPER TRANSPORT INTERNATIONAL LTD | | | SCAC4 |
| 9357 | SRIS | SUNRISE RANCH | | | SCAC4 |
| 9358 | SRIU | CEYLON SHIPPING CORP LTD | | | SCAC4 |
| 9359 | SRIV | SRI VIDYA TEMPLE SOCIETY | | | SCAC4 |
| 9360 | SRIW | SEA RANK INTERNATIONAL INC | | | SCAC4 |
| 9361 | SRIX | Safety Refrigeration, Inc. | 7/1930-7/1935 | | NAKINA |
| 9362 | SRIX | Southern Region Industrial Realty, Inc. | added 4/1982; eliminated 10/1989; 1/1994 (not listed) | | NAKINA |
| 9363 | SRIX | Southwest Rail Industries, Inc. | added 10/1998; 7/2000-7/2005; eliminated 1/2007 | | NAKINA |
| 9364 | SRIX | Southern Region Industrial Realty, Inc. | added 4/82; eliminated 10/89; 1/94 | | NRHS |
| 9365 | SRIX | Southwest Rail Industries, Inc. | added 10/98; 7/2000 | | NRHS |
| 9366 | SRIX | *SAFETY REFRIGERATION, INC. | | | PWRC |
| 9367 | SRIX | *SOUTHERN REGION INDUSTRIAL REALTY INC. | | | PWRC |
| 9368 | SRIX | *SPERRY RAIL, INC. | | | PWRC |
| 9369 | SRIX | +SOUTHWEST RAIL INDUSTRIES, INC. | | | PWRC |
| 9370 | SRIX | Southern Region Industrial Realty (Southwest Rail Industries) | | | RSRV |
| 9371 | SRIX | SOUTHWEST RAIL INDUSTRIES INC | | | SCAC4 |
| 9372 | SRIY | S R CARRIERS CO | | | SCAC4 |
| 9373 | SRJ | Caucasus Airlines | IATA: NS, Callsign: Caucasus, Ceased operations. Name changed from Silk Route Airways. ICAO designator changed from GSR. ICAO callsign changed from Silkroute Airways | GE | AVCODES |
| 9374 | SRJ | C Airjet Airlines | IATA: 7S, Callsign: Syrjet, Ceased operations. | SYR | AVCODES |
| 9375 | SRJ | SuriJet.com Inc. | Callsign: Surijet, | SME | AVCODES |
| 9376 | SRJ | C Air Jet Airlines | | | ICAO1 |
| 9377 | SRJA | SRIGLEY, MARVIN | | | SCAC4 |
| 9378 | SRJC | SURE SHOT TRUCKING LLC | | | SCAC4 |
| 9379 | SRJG | SAALFELD REDISTRIBUTION (DIVISION O | | | SCAC4 |
| 9380 | SRJH | SHARP, RONNIE TRUCKING | | | SCAC4 |
| 9381 | SRJM | SUNRISE JEWELRY MEXICO SA DE CV | | | SCAC4 |
| 9382 | SRJmf | Museiföreningen Stockholm-Roslagens Järnvägar | | SE | VKM |
| 9383 | SRJN | STOLLER, JEFF TRUCKING INC | | | SCAC4 |
| 9384 | SRJP | SRJ EXPEDITE USA LLC | | | SCAC4 |
| 9385 | SRJS | SALAS ROBLES, JOSE SANTOS | | | SCAC4 |
| 9386 | SRK | SkyWork SA | IATA: SX, Callsign: Skyfox, | CH | AVCODES |
| 9387 | SRK | EATIS (European Aero Training Institute Strasbourg) | Callsign: Shark Jet, | F | AVCODES |
| 9388 | SRK | | | | ICAO1 |
| 9389 | SRKB | STERKS BAKERY | | | SCAC4 |
| 9390 | SRKF | SPARKS TRANSPORTATION | | | SCAC4 |
| 9391 | SRKI | STONER, R & K LOGISTICS INC | | | SCAC4 |
| 9392 | SRKL | SCHROCK, LESTER L | | | SCAC4 |
| 9393 | SRKM | SHARK MARINE TECHNOLOGIES | | | SCAC4 |
| 9394 | SRKN | SUNRISE KITCHENS LLC | | | SCAC4 |
| 9395 | SRKP | SPRING CREEK EXPRESS | | | SCAC4 |
| 9396 | SRKQ | SPORTAK | | | SCAC4 |
| 9397 | SRKR | SHIRKEY TRUCKING CORP | | | SCAC4 |
| 9398 | SRKS | Strukton Rail GmbH & Co KG | | DE | VKM |
| 9399 | SRKV | SAFE ROAD TRUCKING INC | | | SCAC4 |
| 9400 | SRKX | Standard Refrigerator Car Co. | 7/1930-7/1932 | | NAKINA |
