| 15301 | CSCF | C S SERVICE INC | | | SCAC3 |
| 15302 | CSCG | CONDRA SCHIFFAHRTS GMBH & CO KG MS | | | SCAC4 |
| 15303 | CSCI | CASTOR, C C TRUCKING | | | SCAC3 |
| 15304 | CSCI | COSCAN INTERNATIONAL INC | | | SCAC4 |
| 15305 | CSCK | C S C TRUCKING INC | | | SCAC3 |
| 15306 | CSCM | COASTAL CARRIERS INC | | | SCAC3 |
| 15307 | CSCN | COSMOPOLITAN CARRIERS INC | | | SCAC3 |
| 15308 | CSCN | CSC OIL TRANSPORTATION(S) PTE LTD | | | SCAC4 |
| 15309 | CSCO | CONSOLIDATED CONTAINER CORP | | | SCAC3 |
| 15310 | CSCO | CUSTOM COURIER SYSTEMS INC | | | SCAC4 |
| 15311 | CSCP | CISCO TRUCKING COMPANY | | | SCAC3 |
| 15312 | CSCP | CARTERET SHIPPING/CARTERET SHIP AGE | | | SCAC4 |
| 15313 | CSCQ | CORALUZZO SAMUEL CO INC | | | SCAC3 |
| 15314 | CSCQ | CORALUZZO, SAMUEL CO INC | | | SCAC4 |
| 15315 | CSCS | CONSUMERS COOPERATIVE SOCIETY | | | SCAC4 |
| 15316 | CSCT | CSC TRANSPORT | | | SCAC4 |
| 15317 | CSCU | CONTAINER SOLUTIONS CO LLC | | UAE | BIC |
| 15318 | CSCU | SCANDINAVIAN CARGO SEA | | | SCAC4 |
| 15319 | CSCV | CS TRANSPORT CORP | | | SCAC3 |
| 15320 | CSCV | CSC SUGAR LLC | | | SCAC4 |
| 15321 | CSCW | COSTCO WHOLESALE | | | SCAC4 |
| 15322 | CSCX | Coal Supply Corp. | added 10/1990; 1/1994-7/2005 | | NAKINA |
| 15323 | CSCX | Oglebay Norton Co. | added 4/1982; eliminated 4/1989 | | NAKINA |
| 15324 | CSCX | Central Silica Co. | added 10/1970; 1/1975-1/1980; eliminated 4/1982 | | NAKINA |
| 15325 | CSCX | Hewitt Transportation Co. | 4/1938 | | NAKINA |
| 15326 | CSCX | The Cincinnati Soap Co. (Hewitt Transportation Co.) | 7/1937 | | NAKINA |
| 15327 | CSCX | The Cincinnati Soap Co. | 7/1935 | | NAKINA |
| 15328 | CSCX | The Cincinnati Soap Co. (Hewitt Transportation Co.) | Apr-38 | | NRHS |
| 15329 | CSCX | Central Silica Co. | added 10/70; 1/75-1/80; eliminated 4/82 | | NRHS |
| 15330 | CSCX | Oglebay Norton Co. | added 4/82; eliminated 4/89 | | NRHS |
| 15331 | CSCX | Coal Supply Corp. | added 10/90; 1/94-7/2000 | | NRHS |
| 15332 | CSCX | *HEWITT TRANSPORTATION {CINCINNATI SOAP CO.} | | | PWRC |
| 15333 | CSCX | *OGLEBAY NORTON CO. {CENTRAL SILICA CO.} | | | PWRC |
| 15334 | CSCX | *CITISTEEL CORP. | | | PWRC |
| 15335 | CSCX | +COAL SUPPLY CORPORATION | | | PWRC |
| 15336 | CSCX | Coal Supply Corporation | | | RSRV |
| 15337 | CSCX | COAL SUPPLY CORPORATION | | | SCAC4 |
| 15338 | CSCY | CASS CITY OIL & GAS CO | | | SCAC4 |
| 15339 | CSCZ | CAIN STEEL | | | PWRC |
| 15340 | CSD | Courier Services, Inc. | Callsign: Delivery, | USA | AVCODES |
| 15341 | CSD | Courier Services | | | ICAO1 |
| 15342 | CSD | | | CS | TRAFFIC |
| 15343 | CSDA | CAPE SAME DAY FREIGHT | | | SCAC4 |
| 15344 | CSDB | COASTAL DISTRIBUTION SERVICE INC | | | SCAC3 |
| 15345 | CSDB | CROSS STATE TRANSPORTATION | | | SCAC4 |
| 15346 | CSDC | COUCH LINES LLC | | | SCAC4 |
| 15347 | CSDD | CUMBERLAND VALLEY EXPRESS LLC | | | SCAC4 |
| 15348 | CSDF | C S D TRUCKING INC | | | SCAC3 |
| 15349 | CSDF | COUNTRYSIDE FUELS | | | SCAC4 |
| 15350 | CSDG | C & S DRAYAGE | | | SCAC3 |
| 15351 | CSDG | C & S DRAYAGE | | | SCAC4 |
| 15352 | CSDH | CENTRAL STATES DISTRIBUTION SERVICE | | | SCAC3 |
| 15353 | CSDH | CLAYCO WAREHOUSE & SUPPLY INC | | | SCAC4 |
| 15354 | CSDI | CENTRAL STATES DISTRIBUTING INC | | | SCAC3 |
| 15355 | CSDI | C & S CPT DISTRIBUTION INC | | | SCAC4 |
| 15356 | CSDJ | CANSO SHIPPING LIMITED | | | SCAC3 |
| 15357 | CSDJ | CYPRESS SHIPPING INC (PANAMA) | | | SCAC4 |
| 15358 | CSDK | CARRIER SERVICE DIVISION OF KINGETT | | | SCAC3 |
| 15359 | CSDL | CROSS, DAVID LYNN | | | SCAC3 |
| 15360 | CSDL | CHINA SHIPPING DEVELOPMENT CO LTD T | | | SCAC4 |
| 15361 | CSDM | C & S IOWA | | | SCAC3 |
| 15362 | CSDM | CATHYS COMPANY | | | SCAC4 |
| 15363 | CSDN | CASA DE LAS PINATAS | | | SCAC4 |
| 15364 | CSDO | CONSOLIDATION SERVICES INTERNATIONA | | | SCAC3 |
| 15365 | CSDO | CONSOLIDATION SERVICES INC | | | SCAC4 |
| 15366 | CSDP | CONSOLIDATED PRODUCTIONS INC | | | SCAC3 |
| 15367 | CSDQ | C & S DELIVERY | | | SCAC3 |
| 15368 | CSDR | COAST DRAYAGE | | | SCAC3 |
| 15369 | CSDR | COURTEOUS DELIVERY | | | SCAC4 |
| 15370 | CSDT | COATSIDE TRANSPORTATION | | | SCAC3 |
| 15371 | CSDT | CURTAIN - SIDE CARRIERS L L C | | | SCAC4 |
| 15372 | CSDU | CONTAINER SOLUTIONS CO LLC | | UAE | BIC |
| 15373 | CSDU | COLORADO SPRINGS DEPARTMENT OF UTILITIES (COLORADO SPRINGS UTILITIES) | | | PWRC |
| 15374 | CSDU | CSKD-INTRANS | | | SCAC3 |
| 15375 | CSDU | CSKD-INTRANS | | | SCAC4 |
| 15376 | CSDW | C & S DISTRIBUTION CO | | | SCAC3 |
| 15377 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | added 10/1989; 1/1994; eliminated 10/1994; added 10/1996; eliminated 1/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 15378 | CSDX | Metropolitan Sanitary District of Greater Chicago | added 7/1956; 10/1957-1/1980; eliminated 10/1989 | | NAKINA |
| 15379 | CSDX | Sanitary District of Chicago | 7/1932-7/1954; eliminated 7/1956 | | NAKINA |
| 15380 | CSDX | Sanitary District of Chicago | 4/38-1/52; eliminated 7/56 | | NRHS |
| 15381 | CSDX | Metropolitan Sanitary District of Greater Chicago | added 7/56; 10/57-1/80; eliminated 10/89 | | NRHS |
| 15382 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | added 10/89; 1/94; eliminated 10/94; added 10/96; eliminated 1/97; 7/2000 | | NRHS |
| 15383 | CSDX | METRO. WATER RECLAMATION DISTRICT OF GREATER CHICAGO | | | PWRC |
| 15384 | CSDX | Metropolitan Water Reclamation District of Greater Chicago | | | RSRV |
| 15385 | CSDX | METRO. WATER RECLAMATION DISTRICT O | | | SCAC4 |
| 15386 | CSDY | CASSIDY TRUCKING INC | | | SCAC3 |
| 15387 | CSDZ | CENTRAL SEED | | | PWRC |
| 15388 | CSE | CSE Aviation Ltd. | Callsign: Oxford, | GB | AVCODES |
| 15389 | CSE | CSE Aviation Ltd. | IATA: NR, Callsign: Wigwam, Desigantor NR recalled by IATA | GB | AVCODES |
| 15390 | CSE | Coral Seas Express Ltd. | | SOL | AVCODES |
| 15391 | CSE | CSE Aviation | | | ICAO1 |
| 15392 | CSE | COLORADO SPRINGS & EASTERN RAILROAD CO. | | | PWRC |
| 15393 | CSE | CASTLE SEDANS LLC | | | SCAC4 |
| 15394 | CSE | Connex South Eastern Ltd. | 1999: 770km standard gauge, electrified at 750V= 3rd rail | GB | TRAFFIC |
| 15395 | CSE | Connex Sout Eastern | | UK | VKM |
| 15396 | CSEA | CREATIONS SEGO INC | | | SCAC4 |
| 15397 | CSEB | CONCORDE SHIPPING INC | | | SCAC4 |
| 15398 | CSEC | CASEY CARTAGE INC | | | SCAC3 |
| 15399 | CSEC | CASE, JAMES OIL COMPANY INC | | | SCAC4 |
| 15400 | CSED | CMS DOMESTIC | | | SCAC3 |
