| 1 | CSL | Minson Aviation, Inc. d/b/a California Air Shuttle (Oxnard,Ca) | Callsign: California Shuttle, | USA | AVCODES |
| 2 | CSL | Casair Aviation Ltd. | IATA: KS, Callsign: Casair, | GB | AVCODES |
| 3 | CSL | California Air Shuttle | | | ICAO1 |
| 4 | CSL | ISG South Chicago & Indiana Harbor Ry. Co. d/b/a South Chicago & Indiana Harbor Ry. Co. | 7/2005 | | NAKINA |
| 5 | CSL | Chicago Short Line R.R. Co. | 1/1975-7/2000; eliminated 10/2002 | | NAKINA |
| 6 | CSL | Chicago Short Line R.R. Co. | 1/75-7/2000 | | NRHS |
| 7 | CSL | ISG SOUTH CHICAGO & INDIANA HARBOR RWY. CO. [CHICAGO SHORT LINE RAILWAY COMPANY] | | | PWRC |
| 8 | CSL | Chicago Short Line Railway | | | RSRV |
| 9 | CSL | Chicago Surface Lines | | USA | TRAFFIC |
| 10 | CSLA | CONSOLIDATED DUMP TRANSPORTATION CO | | | SCAC3 |
| 11 | CSLB | CONSOLIDATED FILM SERVICE | | | SCAC3 |
| 12 | CSLC | CASTER STORAGE & LEASING CO | | | SCAC3 |
| 13 | CSLE | CONSOLODATED TRANSFER & WAREHOUSE C | | | SCAC3 |
| 14 | CSLG | CONSOLIDATED TRUCK SERVICE INC | | | SCAC3 |
| 15 | CSLH | CONSOLIDATED VAN & STORAGE COMPANIE | | | SCAC3 |
| 16 | CSLI | CSX INTERMODAL, INC. | | | PWRC |
| 17 | CSLI | CSX INTERMODAL INC | | | SCAC3 |
| 18 | CSLK | CONSTRUCTION HAULAGE CORP | | | SCAC3 |
| 19 | CSLL | CRISTELLI, PAT TRUCKING | | | SCAC3 |
| 20 | CSLM | CASTLE LEASING INC | | | SCAC3 |
| 21 | CSLMV | Letecky Oddíl Ministerstva Vnitra | | CS | TRAFFIC |
| 22 | CSLN | CRESCO LINES INC | | | SCAC3 |
| 23 | CSLO | COASTAL TRANSFER CO | | | SCAC3 |
| 24 | CSLQ | CASE TRUCK LINE | | | SCAC3 |
| 25 | CSLR | CASELLA TRANSPORTATION INC | | | SCAC3 |
| 26 | CSLR | City&South London Railway | City: London, Tube | GB | TRAFFIC |
| 27 | CSLS | COAST-LINE EXPRESS CO, THE (CLX) | | | SCAC3 |
| 28 | CSLU | COSCO SHIPPING DEVELOPMENT (ASIA) CO.,LTD | | HK | BIC |
| 29 | CSLU | COMMODORE SHIPPING CO., LTD | | | SCAC3 |
| 30 | CSLV | COSTILL TRUCKING INC | | | SCAC3 |
| 31 | CSLW | COASTAL LOWBED HAULING INC | | | SCAC3 |
| 32 | CSLX | Holcim (Canada) Inc. | added 1/2010 | | NAKINA |
| 33 | CSLX | Ciment St-Laurent | added 7/2007; eliminated 1/2010 | | NAKINA |
| 34 | CSLX | Concrete Supply Co. | added 1/1975; 1/1975; eliminated 1/1980 | | NAKINA |
| 35 | CSLX | Concrete Supply Co. | added 1/75; 1/75; eliminated 1/80 | | NRHS |
| 36 | CSLX | *CONCRETE SUPPLY CO. | | | PWRC |
| 37 | CSLX | *CAREY SHORT LINE CORP. | | | PWRC |
| 38 | CSLX | +CIMENT ST-LAURENT | | | PWRC |
