| 1401 | SCDL | SCHLEI DRAY LINE INC | | | SCAC4 |
| 1402 | SCDM | STANDARD COMPONENTS DE MEXICO SA | | | SCAC4 |
| 1403 | SCDQ | SIEMENS CANADA LTD | | | SCAC4 |
| 1404 | SCDR | SCOT INDUSTRIES INC | | | SCAC4 |
| 1405 | SCDS | SCHNEIDER NATIONAL CARRIERS INC-OPT | | | SCAC4 |
| 1406 | SCDT | SOCIEDAD COOP DE TRANSPORTES DE CAR | | | SCAC4 |
| 1407 | SCDV | STARTON TRUCKING INC | | | SCAC4 |
| 1408 | SCDX | Swift Canadian Co., Ltd. | 7/1935-1/1952 | | NAKINA |
| 1409 | SCDX | Swift Canadian Co., Ltd. | 4/38-1/52 | | NRHS |
| 1410 | SCDX | SWIFT CANADIAN CO., LTD. | | | PWRC |
| 1411 | SCDY | SAUCEDO CALDERON, SAMUEL | | | SCAC4 |
| 1412 | SCE | Eagle Canyon Airlines, Inc. d/b/a Scenic Airlines Inc. | IATA: YR, Callsign: Scenic, IATA Prefix: 398, Name changed to Eagle Jet Charter, Inc. d/b/a Scenic Airlines. ICAO designator changed from YRR | USA | AVCODES |
| 1413 | SCE | Eagle Jet Charter, Inc. d/b/a Scenic Airlines | IATA: YR, Callsign: Scenic, IATA Prefix: 398, Name changed from Eagle Canyon Airlines, Inc. d/b/a Scenic Airlines Inc. ICAO designator changed from YRR | USA | AVCODES |
| 1414 | SCE | Scenic Airlines | | | ICAO1 |
| 1415 | SCEB | SPC COWBOYS TRANSPORTES | | | SCAC4 |
| 1416 | SCEC | STAR CONNECTION TRUCKING LLC | | | SCAC4 |
| 1417 | SCED | SUNBURY CEDAR SALES LTD | | | SCAC4 |
| 1418 | SCEE | SALAS SANCHEZ, ESPERANZA | | | SCAC4 |
| 1419 | SCEG | SOUTH CAROLINA ELECTRIC & GAS COMPA | | | SCAC4 |
| 1420 | SCEH | S & C EXPRESS INC | | | SCAC4 |
| 1421 | SCEI | SUGAR CREEK ENTERPRISES INC | | | SCAC4 |
| 1422 | SCEL | Stagecoach East London | | GB | TRAFFIC |
| 1423 | SCEQ | SCHOLTENS EQUIPMENT INC | | | SCAC4 |
| 1424 | SCER | SCHERPING TRUCKING INC | | | SCAC4 |
| 1425 | SCES | STAR LOGISTICS INC | | | SCAC4 |
| 1426 | SCEU | SEACO SRL | | BDS | BIC |
| 1427 | SCEU | SEA CONTAINERS IBERIA SA | | | SCAC4 |
| 1428 | SCEV | SPECIALIZED TRANSPORT SERVICE LLC | | | SCAC4 |
| 1429 | SCEX | Southern California Edison Co. | added 10/1958; 4/1961-7/2005 | | NAKINA |
| 1430 | SCEX | Standard Tank Car Co. | 8/1920-7/1923 | | NAKINA |
| 1431 | SCEX | Southern California Edison Co. | added 10/58; 4/61-7/2000 | | NRHS |
| 1432 | SCEX | *STANDARD TANK CAR CO. | | | PWRC |
| 1433 | SCEX | +SOUTHERN CALIFORNIA EDISON CO. | | | PWRC |
| 1434 | SCEX | Southern California Edison | | | RSRV |
| 1435 | SCEZ | SCRANTON EQUITY | | | PWRC |
| 1436 | SCF | Space Cargo (T) Ltd. | Callsign: Space Cargo, | EAT | AVCODES |
| 1437 | SCF | Socofer Lda | Callsign: Socofer, | ANG | AVCODES |
| 1438 | SCF | Socofer | | | ICAO1 |
| 1439 | SCFA | SCHARF, CARRI TRUCKING | | | SCAC4 |
| 1440 | SCFD | SCHAHRER FARMS | | | SCAC4 |
| 1441 | SCFE | South Central Florida Express, Inc. | added 1/1995; added 4/1995; 7/2000-7/2005 | | NAKINA |
| 1442 | SCFE | South Central Florida R.R., Division of Brandywine Valley R.R. Co. | added 1/1991; 1/1994; eliminated 1/1995; eliminated 4/1995 | | NAKINA |
| 1443 | SCFE | South Central Florida R.R., Division of Brandywine Valley R.R. Co. | added 1/91; 1/94; eliminated 1/95; eliminated 4/95 | | NRHS |
| 1444 | SCFE | South Central Florida Express, Inc. | added 1/95; added 4/95; 7/2000 | | NRHS |
| 1445 | SCFE | SOUTH CENTRAL FLORIDA EXPRESS (BRANDYWINE VALLEY RR CO./ SOUTH CENTRAL FLORIDA RR) | | | PWRC |
| 1446 | SCFE | South Central Florida Express | | | RSRV |
| 1447 | SCFE | South Central Florida Express, Inc. | | USA | TRAFFIC |
| 1448 | SCFF | SCHARFS SERVICE & FUEL OIL INC | | | SCAC4 |
| 1449 | SCFI | SEACLIFF LABORATORY INCORPORATED | | | SCAC4 |
| 1450 | SCFJ | SHORT CREEK FJORDS | | | SCAC4 |
| 1451 | SCFL | SOUTHERN CALIF FRT LINES | | | PWRC |
| 1452 | SCFN | SANDY CREEK FARM LLC | | | SCAC4 |
| 1453 | SCFP | SUMMIT CFS INC | | | SCAC4 |
| 1454 | SCFQ | S C FUELS | | | SCAC4 |
| 1455 | SCFS | Straits Car Ferry Service Corp. | 1/1980 | | NAKINA |
| 1456 | SCFS | Straits Car Ferry Service Corp. | Jan-80 | | NRHS |
| 1457 | SCFS | STRAITS CAR FERRY SERVICE CORP. | | | PWRC |
| 1458 | SCFS | Straits Car Ferry Service Corporation | | | RSRV |
| 1459 | SCFS | SKY 2 C FREIGHT SYSTEMS INC | | | SCAC4 |
| 1460 | SCFT | SCHAFER TRUCKING COMPANY | | | SCAC4 |
| 1461 | SCFU | SCF GROUP | | AUS | BIC |
| 1462 | SCFY | STONE, C F INC | | | SCAC4 |
| 1463 | SCG | Sitra Cargo System | Callsign: Sitra, | PE | AVCODES |
| 1464 | SCG | Sky Carrier SP.z.o.o. | Merged into SprintAir Cargo - SAR | PL | AVCODES |
| 1465 | SCGB | SCHRAGE TRUCKING LLC | | | SCAC4 |
| 1466 | SCGC | SCARLET & GRAY CORP | | | SCAC4 |
| 1467 | SCGD | SCHEAR TRUCKING | | | SCAC4 |
| 1468 | SCGF | SCG INDUSTRIES LIMITED | | | SCAC4 |
| 1469 | SCGG | SCHOENEGGE INC | | | SCAC1 |
| 1470 | SCGH | SUPERIOR CRUDE GATHERING INC | | | SCAC4 |
| 1471 | SCGM | SNICO CARTAGE INC | | | SCAC4 |
| 1472 | SCGN | SUPER COMERCIAL GONZALEZ SA DE CV | | | SCAC4 |
| 1473 | SCGP | SCOTT LOGISTICS CORP | | | SCAC4 |
| 1474 | SCGS | STAIR CARGO SERVICE INC | | | SCAC1 |
| 1475 | SCGT | SOUTH CARGO TRANSPORTATION INC | | | SCAC4 |
| 1476 | SCGU | WKS INDUSTRIAL GAS PTE LTD | | SGP | BIC |
| 1477 | SCGV | ST CLAIR SERVICES INC | | | SCAC4 |
| 1478 | SCGX | Eades Commodities Co. | added 4/1990; 1/1994; eliminated 7/2000 | | NAKINA |
| 1479 | SCGX | Schuler Grain Co. | added 10/1979; 1/1980; eliminated 4/1990 | | NAKINA |
| 1480 | SCGX | Standard Carbon Co. | 7/1923 | | NAKINA |
| 1481 | SCGX | General Electric Rail Services Corp. | added 7/2000; 7/2000-7/2005 | | NAKINA |
| 1482 | SCGX | Schuler Grain Co. | 1/80; eliminated 4/90 | | NRHS |
| 1483 | SCGX | Eades Commodities Co. | added 4/90; 1/94; eliminated 7/2000 | | NRHS |
| 1484 | SCGX | General Electric Rail Services Corp. | added 7/2000; 7/2000 | | NRHS |
| 1485 | SCGX | *STANDARD CARBON CO. | | | PWRC |
| 1486 | SCGX | *EADES COMMODITIES COMPANY [SCHULER GRAIN CO.] | | | PWRC |
| 1487 | SCGX | +GENERAL ELECTRIC RAIL SERVICES CORP. | | | PWRC |
| 1488 | SCGX | Schuler Grain (Eades Commodities) | | | RSRV |
| 1489 | SCGX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |
| 1490 | SCH | Schreiner Airways B.V. | IATA: WS, Callsign: Schreiner, Designator WS recalled by IATA | NL | AVCODES |
| 1491 | SCH | Schreiner Airways B.V. | IATA: AW, Callsign: Schreiner, IATA Prefix: 405, Designator AW recalled by IATA | NL | AVCODES |
| 1492 | SCH | Schreiner Airways B.V. | Callsign: Schreiner, IATA Prefix: 405, The Schreiner Aviation Group was purchased by the CHC Helicopter Corporation in 2005. Designator AW recalled by IATA | NL | AVCODES |
| 1493 | SCH | Scenic Air AG | Callsign: Share Plane, | CH | AVCODES |
| 1494 | SCH | CHC Airways | IATA: AW | | ICAO1 |
| 1495 | SCH | Sägewerk Schwaiger GmbH & Co | | D | TRAFFIC |
| 1496 | SCHAU | Ernst Schauffele Schienenverkehrs GmbH & Co KG | Real: ESS | D | TRAFFIC |
| 1497 | SCHB | Schöllenenbahn | | CH | TRAFFIC |
| 1498 | SCHE | SCHUSTERS EXPRESS INC | | | PWRC |
| 1499 | SCHENCK | Schenck Transportation Corp. | | USA | TRAFFIC |
| 1500 | SCHENK | Schenk Vins SA | City: Rolle | CH | TRAFFIC |
