| 1 | SCL | Swiftair Cargo Ltd. | Callsign: Swiftair, | CDN | AVCODES |
| 2 | SCL | Shell Canada | Callsign: Shell Canada, | CDN | AVCODES |
| 3 | SCL | Switfair Cargo | | | ICAO1 |
| 4 | SCL | Seaboard Coast Line R.R. Co. | 4/1970-1/1980; eliminated 1/1983 | | NAKINA |
| 5 | SCL | Seaboard System R.R., Inc. | added 1/1983; eliminated 7/1987 | | NAKINA |
| 6 | SCL | CSX Transportation, Inc. | added 7/1987; 1/1994-7/2005 | | NAKINA |
| 7 | SCL | Seaboard Coast Line R.R. Co. | 4/70-1/80; eliminated 1/83 | | NRHS |
| 8 | SCL | Seaboard System R.R., Inc. | added 1/83; eliminated 7/87 | | NRHS |
| 9 | SCL | CSX Transportation, Inc. | added 7/87; 1/94-7/2000 | | NRHS |
| 10 | SCL | CSX TRANSPORTATION, INC. [SEABOARD COAST LINE RR.] | | | PWRC |
| 11 | SCL | Seaboard Coast Line Railroad (CSX Transportation) | | | RSRV |
| 12 | SCL | SEABOARD COAST LINE RAILROAD | | | SCAC4 |
| 13 | SCL | Seaboard Coast Line | | USA | TRAFFIC |
| 14 | SCLA | STONEY CREEK LOGISTICS | | | SCAC4 |
| 15 | SCLB | SERRES CLAUDE BEAUVAIS INC | | | SCAC4 |
| 16 | SCLC | S C LOGISTICS FREIGHT FORWARDING SERVICES | | | SCAC1 |
| 17 | SCLC | SABINE CO2 LOGISTICS INC | | | SCAC4 |
| 18 | SCLD | SCULLY DISTRIBUTION SERVICES INC | | | SCAC4 |
| 19 | SCLDN | Stageoach London | In October 2010 Stagecoach reacquired its old London operations with all operations once again rebranded as Stagecoach London. | GB | TRAFFIC |
| 20 | SCLE | SHADOW-CORE LEASING LTD | | | SCAC4 |
| 21 | SCLF | SOCIETA COMMERCIALE E FINANZIARIA S | | | SCAC4 |
| 22 | SCLI | SOVEREIGN CONTAINER LINE INC | | | SCAC4 |
| 23 | SCLL | SCHELL EXPEDITING COMPANY | | | SCAC4 |
| 24 | SCLM | STERLING CONTAINER LINE LIMITED | | | SCAC4 |
| 25 | SCLN | SCL NIELSEN MULTIMODAL TRANSPORT IN | | | SCAC4 |
| 26 | SCLOC | SC Loctrans SA | | RO | TRAFFIC |
| 27 | SCLQ | SUNCREST COLONY LTD | | | SCAC4 |
| 28 | SCLS | SYNERGY CARGO LOGISTICS INC | | | SCAC4 |
| 29 | SCLS | Stagecoach Lincolnshire | | GB | TRAFFIC |
| 30 | SCLT | SWAN CONTAINER LINE GMBH & CO | | | SCAC4 |
| 31 | SCLU | SMART CONTAINER LINES PTE LTD | | SGP | BIC |
| 32 | SCLU | SEA CONTAINERS INC | | | PWRC |
| 33 | SCLU | Sea Containers | | | RSRV |
| 34 | SCLW | SOUTHERN COUNTIES LUBRICANTS LLC | | | SCAC4 |
| 35 | SCLX | Standard Chemical Co., Ltd. | 7/1930-1/1950 | | NAKINA |
| 36 | SCLX | Standard Chemical, Ltd. | added 7/1955; 10/1957-1/1975; eliminated 10/1975 | | NAKINA |
| 37 | SCLX | Stanchem Division, PPG Industries Canada Ltd. | added 10/1975; 1/1980; eliminated 7/1984 | | NAKINA |
| 38 | SCLX | PPG Canada, Inc. | added 7/1984; eliminated 10/1984 | | NAKINA |
| 39 | SCLX | PPG Canada, Inc., Industrial Chemicals | added 10/1984; 1/1994; eliminated 1/1997 | | NAKINA |
| 40 | SCLX | CanadianOxy Industrial Chemicals Limited Partnership | added 1/1997; 7/2000; eliminated 4/2002 | | NAKINA |
| 41 | SCLX | Nexen Chemical Canada Limited Partnership | added 4/2002; 7/2005; eliminated 1/2010 | | NAKINA |
| 42 | SCLX | Canexus Chemicals Canada Limited Partnership | added 1/2010 | | NAKINA |
| 43 | SCLX | Samuet Cabot, Inc. | Apr-38 | | NRHS |
| 44 | SCLX | Standard Chemical Co., Ltd. | Apr-38 | | NRHS |
| 45 | SCLX | Standard Chemical, Ltd. | added 7/55; 10/57-1/75 | | NRHS |
| 46 | SCLX | Stanchem Division, PPG Industries Canada Ltd. | 1/80; eliminated 7/84 | | NRHS |
| 47 | SCLX | PPG Canada, Inc. | added 7/84; eliminated 10/84 | | NRHS |
| 48 | SCLX | PPG Canada, Inc., Industrial Chemicals | added 10/84; 1/94; eliminated 1/97 | | NRHS |
| 49 | SCLX | CanadianOxy Industrial Chemicals Limited Partnership | added 1/97; 7/2000 | | NRHS |
| 50 | SCLX | NEXEN CHEMICAL CANADA LP [CANADIANOXY INDUSTRIAL CHEMICALS LP; PPG INDUSTRIES CANADA, LTD., STANCHEM DIV.; STANDARD CHEMICAL, LTD.] | | | PWRC |
| 51 | SCLX | PPG Industries Canada Stanchem Division | | | RSRV |
| 52 | SCLX | CANEXUS CHEMICALS CANADA LIMITED PA | | | SCAC4 |
| 53 | SCLZ | CSX TRANSPORTATION, INC. | | | PWRC |
