| 4501 | SHNU | KARL SCHMIDT SPEDITION GMBH & CO KG | | D | BIC |
| 4502 | SHNU | KARL SCHMIDT SPEDITION GMBH & CO KG | | | SCAC4 |
| 4503 | SHNX | SIMS HUGO NEU | | | PWRC |
| 4504 | SHNX | SIMS HUGO NEU | | | SCAC4 |
| 4505 | SHNY | SHERIDAN NURSERIES LTD | | | SCAC4 |
| 4506 | SHO | Sheremetyevo-Cargo JSC | | RUS | AVCODES |
| 4507 | SHO | Sheremetyevo-Cargo | | | ICAO1 |
| 4508 | SHO | Stoomclub Hoogovens | | NL | TRAFFIC |
| 4509 | SHOA | SEASHORE TRANSPORT LTD | | | SCAC4 |
| 4510 | SHOC | SHUSTER OIL & CHEMICAL CO INC | | | SCAC4 |
| 4511 | SHOD | SHOP INDUSTRIAL, THE | | | SCAC4 |
| 4512 | SHOE | STRAIGHT SHOT EXPRESS | | | SCAC4 |
| 4513 | SHOF | SCHOONOVER FARMS | | | SCAC4 |
| 4514 | SHOL | SUBURBAN HEATING OIL PARTNERS LLC | | | SCAC4 |
| 4515 | SHON | SMART CHOICE TRANSPORT LTD | | | SCAC4 |
| 4516 | SHOP | SHERMAN OIL CO INC | | | SCAC4 |
| 4517 | SHORTLINE | Short Line Bus | A Coach USA company | USA | TRAFFIC |
| 4518 | SHOS | SHORECREST EXPRESS INC | | | SCAC4 |
| 4519 | SHOT | SHOTGUN EXPRESS INC | | | SCAC4 |
| 4520 | SHOU | SHIPPER OWNED CONTAINER LLC | | USA | BIC |
| 4521 | SHOU | Shipper Owned Container | | | RSRV |
| 4522 | SHOW | SHANAHOWE TRANSPORTATION INC | | | SCAC4 |
| 4523 | SHOWA | Showa Electric Co. | | J | TRAFFIC |
| 4524 | SHOY | SCANDIA HONEY | | | SCAC4 |
| 4525 | SHP | Service Aerien Francais | Callsign: Saf, Name changed to SAF Helicopteres | F | AVCODES |
| 4526 | SHP | SAF Helicopteres | Callsign: Saf, Name changed from Service Aerien Francais | F | AVCODES |
| 4527 | SHP | Service Aerien Francais | | | ICAO1 |
| 4528 | SHP | SHARP BUS LINES LIMITED | | | SCAC4 |
| 4529 | SHPA | SHEPHERD OIL COMPANY | | | SCAC4 |
| 4530 | SHPF | SHANGHAI PIFF SHIPPING LTD | | | SCAC4 |
| 4531 | SHPG | SOUTHPORT TRUCKING INC | | | SCAC4 |
| 4532 | SHPJ | SHARPY TRANSPORT INC | | | SCAC4 |
| 4533 | SHPK | SHARP TRANSPORT INC | | | SCAC4 |
| 4534 | SHPM | SHAH TRADING COMPANY LIMITED | | | SCAC4 |
| 4535 | SHPN | SHIPLEY TRUCKING | | | SCAC4 |
| 4536 | SHPO | SHIPPERS TRANSPORT EXPRESS | | | SCAC4 |
| 4537 | SHPP | SHORELINE TRANSPORTATION INC | | | SCAC4 |
| 4538 | SHPR | SHIPPERS EXPRESS, INC | | | SCAC1 |
| 4539 | SHPR | SHIPPERS EXPRESS | | | SCAC4 |
| 4540 | SHPS | SHIP TO SHORE TRANSPORT INC | | | SCAC4 |
| 4541 | SHPT | SHIPCO TRANSPORT | | | SCAC1 |
| 4542 | SHPT | SHIPCO TRANSPORT INC | | | SCAC4 |
| 4543 | SHPU | JIANGXI SHIP DATA TECHNOLOGY CO., LTD. | | PRC | BIC |
| 4544 | SHPX | Shippers' Car Line, Inc. | 7/1923 | | NAKINA |
| 4545 | SHPX | Shippers' Car Line Corp. | 7/1930-7/1954; eliminated 7/1956 | | NAKINA |
| 4546 | SHPX | Shippers' Car Line Division of ACF Industries, Inc. | added 7/1956; 10/1957-1/1975; eliminated 1/1976 | | NAKINA |
| 4547 | SHPX | Shippers' Car Line Division, ACF Industries, Inc. | added 1/1976; 1/1980; eliminated 4/1988 | | NAKINA |
| 4548 | SHPX | ACF Industries, Inc. | eliminated 4/1988; eliminated 10/1993; 1/1994 (not listed); added 7/1997; 7/2000; eliminated 4/2005 | | NAKINA |
| 4549 | SHPX | American Railcar Leasing, Inc. | added 4/2005; 7/2005 | | NAKINA |
| 4550 | SHPX | Shippers' Car Line Corp. | 4/38-1/52; eliminated 7/56 | | NRHS |
| 4551 | SHPX | Shippers' Car Line Division of ACF Industries, Inc. | added 7/56; 10/57-1/80; eliminated 4/88 | | NRHS |
| 4552 | SHPX | ACF Industries, Inc. | eliminated 4/88; eliminated 10/93; 1/94; added 7/97; 7/2000 | | NRHS |
| 4553 | SHPX | AMERICAN RAILCAR LEASING, INC. [ACF INDUSTRIES, INC.; SHIPPERS' CAR LINE CORP.] | | | PWRC |
| 4554 | SHPX | ACF Industries Shippers Car Line Division | | | RSRV |
| 4555 | SHPX | AMERICAN RAILCAR LEASING LLC | | | SCAC4 |
| 4556 | SHPX | Shippers' Car Line Corp. | | USA | TRAFFIC |
| 4557 | SHPY | SHEPLEY MOTOR EXPRESS INC | | | SCAC4 |
| 4558 | SHQ | Shanghai Airlines Cargo International | IATA: F4, Callsign: Shanghai Cargo, IATA Prefix: 825, | PRC | AVCODES |
| 4559 | SHQ | Shanghai Airlines Cargo | | | ICAO1 |
| 4560 | SHQE | SHAW PROPANE INC | | | SCAC4 |
| 4561 | SHQG | SUTTON HAULING INC | | | SCAC4 |
| 4562 | SHQI | SHOMOTION LLC | | | SCAC4 |
| 4563 | SHQJ | SMITH OIL CO INC | | | SCAC4 |
| 4564 | SHQL | SOUTHERN TRANSPORTATION LEASING INC | | | SCAC4 |
| 4565 | SHQQ | STEELHORN & HILL INC | | | SCAC4 |
| 4566 | SHQR | SCHEER TRUCKING INC | | | SCAC4 |
| 4567 | SHQW | SHOWCASE CARRIERS INC | | | SCAC4 |
| 4568 | SHQX | AMERICAN RAILCAR INDUSTRIES | | | SCAC4 |
| 4569 | SHQY | SHARP TRANSPORTATION SYSTEMS INC | | | SCAC4 |
| 4570 | SHR | Shooter Air Courier, Corp. | Callsign: Shooter, | CDN | AVCODES |
| 4571 | SHR | Air Sylhet AG | IATA: SL, Founded in 2007. Commenced operations on 04 April 2009. Ceased operations operations in May 2009. | A | AVCODES |
| 4572 | SHR | Shooter Air Courier | | | ICAO1 |
| 4573 | SHR | SHUTTLE ROSE, THE | | | SCAC4 |
| 4574 | SHR | Syrian Hidjaz Railway | | SY | VKM |
| 4575 | SHRB | SUHR, LEROY TRUCKING | | | SCAC4 |
| 4576 | SHRD | SHRADER TRUCKING INC | | | SCAC4 |
| 4577 | SHRF | SUN RICH FRESH FOODS INC USA | | | SCAC4 |
| 4578 | SHRH | SOUTHERN CONTAINER TRANSFER INC | | | SCAC4 |
| 4579 | SHRJ | SHUTTLE | | | SCAC4 |
| 4580 | SHRO | SHRI HOM ROADWAYS INC | | | SCAC4 |
| 4581 | SHRQ | SHELTER ROCK CORPORATION | | | SCAC4 |
| 4582 | SHRR | SHERRINGTON TRANSPORT INC | | | SCAC4 |
| 4583 | SHRS | SHR LOGISTICS | | | SCAC4 |
| 4584 | SHRW | SHREDSUPPLY | | | SCAC4 |
| 4585 | SHRX | Smoky Hill Railway & Historical Society, Inc. | 7/2005 (not listed) | | NAKINA |
| 4586 | SHRX | SMOKY HILL RAILWAY & HISTORICAL SOCIETY, INC. | | | PWRC |
| 4587 | SHRX | Kansas City Railroad Museum | | | RSRV |
| 4588 | SHRX | SMOKY HILL RAILWAY & HISTORICAL SOC | | | SCAC4 |
| 4589 | SHRY | SHUR TRANSPORT LTD | | | SCAC4 |
| 4590 | SHS | Sunshine Aviation SA | IATA: OC, Callsign: Sunshine, Designator OC recalled by IATA | CH | AVCODES |
| 4591 | SHS | Sunshine Aviation SA | Callsign: Sunshine, | CH | AVCODES |
| 4592 | SHS | Shirak Avia LLC | IATA: 5G, Callsign: Shirak, IATA Prefix: 740, | AM | AVCODES |
| 4593 | SHS | Shura Air Transport Services | | | ICAO1 |
| 4594 | SHSC | SHIPPERS STEVEDORING COMPANY | | | SCAC4 |
| 4595 | SHSE | SHANGHAI SUPER EXPRESS CO LTD | | | SCAC4 |
| 4596 | SHSF | SHORE TO SHORE FREIGHTLINES INC | | | SCAC4 |
| 4597 | SHSG | SHIELS, TIM TRUCKING | | | SCAC4 |
| 4598 | SHSH | SASKATOON HOT SHOT TRANSPORTER SERV | | | SCAC4 |
| 4599 | SHSI | SCHWARM SERVICE INC | | | SCAC4 |
| 4600 | SHSM | SHIN ETSU POLYMER MEXICO SA DE CV | | | SCAC4 |
