| 15401 | CSEE | C'S ENTERPRISES | | | SCAC3 |
| 15402 | CSEF | C & S EXPRESS INC | | | SCAC3 |
| 15403 | CSEF | COTTONS SHOP | | | SCAC4 |
| 15404 | CSEG | CSG SECURITY SERVICES INC | | | SCAC3 |
| 15405 | CSEG | CREATIVE SOLUTIONS GROUP | | | SCAC4 |
| 15406 | CSEH | CENTRAL STATES EXPRESS INC | | | SCAC3 |
| 15407 | CSEH | CS LOGISTICS INC | | | SCAC4 |
| 15408 | CSEI | COASTAL SERVICE EXPRESS INC | | | SCAC3 |
| 15409 | CSEJ | C & S EXPRESS | | | SCAC3 |
| 15410 | CSEK | CASE TRUCKING INC | | | SCAC3 |
| 15411 | CSEL | CAR SEA ENTERPRISES INC | | | SCAC3 |
| 15412 | CSEL | CAR SEA ENTERPRISES INC | | | SCAC4 |
| 15413 | CSEM | CLASSIC EXPRESS INC | | | SCAC3 |
| 15414 | CSEM | CANADIAN STEBBINS ENGINEERING & MFG | | | SCAC4 |
| 15415 | CSEN | CASE ENTERPRISES INC | | | SCAC3 |
| 15416 | CSEO | CASE TRANSPORTATION INC | | | SCAC3 |
| 15417 | CSEP | COMSTAR ENTERPRISES INC | | | SCAC4 |
| 15418 | CSEQ | CHICAGO SUBURBAN EXPRESS, INC | | | SCAC3 |
| 15419 | CSER | CARTAGE SERVICES, INC | | | SCAC3 |
| 15420 | CSER | CASTRO GARCIA, SERGIO | | | SCAC4 |
| 15421 | CSERV | Cargo-Serv | | A | TRAFFIC |
| 15422 | CSES | CALIFORNIA SPECIALIZED EQUIPMENT SY | | | SCAC4 |
| 15423 | CSET | COASTAL EXPRESS TRUCKING | | | SCAC3 |
| 15424 | CSEW | CENTRAL STATES EXPRESS | | | SCAC3 |
| 15425 | CSEW | C & S EXPRESS INC | | | SCAC4 |
| 15426 | CSEY | CASEYS BONDED DELIVERY SERVICE | | | SCAC3 |
| 15427 | CSEY | CASEY, KENT | | | SCAC4 |
| 15428 | CSF | Clasair | Callsign: Clanair, ICAO callsign changed to Clasair | GB | AVCODES |
| 15429 | CSF | Clasair | Callsign: Clasair, Ceased operations. ICAO callsign changed from Clanair | GB | AVCODES |
| 15430 | CSF | Clasair | | | ICAO1 |
| 15431 | CSFA | C T S TRANSPORTATION INC | | | SCAC3 |
| 15432 | CSFB | COASTAL FIBERS INC | | | SCAC3 |
| 15433 | CSFC | CALIFORNIA SEED & FERTILIZER CO | | | SCAC3 |
| 15434 | CSFD | CAISSON FORWARDING CO INC | | | SCAC3 |
| 15435 | CSFE | CAMH-STAR FORWARDING AGENCY INC | | | SCAC3 |
| 15436 | CSFE | COMPLETE SURFACE TECHNOLOGIES INC | | | SCAC4 |
| 15437 | CSFF | CANADIAN SUB-SURFACE ENERGY SERVICE | | | SCAC4 |
| 15438 | CSFH | COASTAL FREIGHT LINES INC | | | SCAC3 |
| 15439 | CSFI | CROSS-SOUND FERRY SERVICES INC | | | SCAC3 |
| 15440 | CSFI | COSA FREIGHT INC | | | SCAC4 |
| 15441 | CSFK | COSMO SEA FREIGHT (HK) LIMITED | | | SCAC4 |
| 15442 | CSFL | CROWN SEAFOOD LTD | | | SCAC4 |
| 15443 | CSFM | CASCO FARMS | | | SCAC3 |
| 15444 | CSFN | CORSAIR FORWARDING CO INC | | | SCAC3 |
| 15445 | CSFO | CASEY FUEL OIL CORPORATION | | | SCAC3 |
| 15446 | CSFO | COMEAUS SEAFOOD LTD | | | SCAC4 |
| 15447 | CSFQ | CONNORS TRANSFER LIMITED | | | SCAC4 |
| 15448 | CSFR | CASCADE FREIGHT SERVICE | | | SCAC3 |
| 15449 | CSFT | CROSSFIRE TRANSPORTATION INC | | | SCAC4 |
| 15450 | CSFU | CMA-CGM | | F | BIC |
| 15451 | CSFU | CONTAINER SHIPS LTD OY/SHIPS CONTAI | | | SCAC3 |
| 15452 | CSFU | CONTAINERSHIPS LTD OY | | | SCAC4 |
| 15453 | CSFV | COASTAR FREIGHT SERVICES INC | | | SCAC4 |
| 15454 | CSFW | CARTER & SONS FREIGHTWAYS, Eagle Freightways, INC | | | SCAC3 |
| 15455 | CSFY | CHRISTY SPECIALIZED TRANSPORT | | | SCAC4 |
| 15456 | CSG | Aero Costa Sol, S.A. | Callsign: Costa Sol, | CR | AVCODES |
| 15457 | CSG | Czech Government Flying Service | | CS | AVCODES |
| 15458 | CSG | Air Caucasus | IATA: UY, IATA Prefix: 049, Commenced operations in August 2013. Ceased operations during 2014. | GE | AVCODES |
| 15459 | CSG | China Southern Airlines Cargo | Callsign: Southern Cargo, | PRC | AVCODES |
| 15460 | CSG | Club del San Gottardo | | CH | VKM |
| 15461 | CSGA | CHEAHA STAGE LINES | | | SCAC3 |
| 15462 | CSGB | CARDENAS, S G BROKERAGE | | | SCAC3 |
| 15463 | CSGB | CONDOR SIGNAL & COMMUNICATIONS INC | | | SCAC4 |
| 15464 | CSGC | COASTAL STATES CRUDE GATHERING CO | | | SCAC3 |
| 15465 | CSGC | COLD SPRING GRANITE COMPANY | | | SCAC4 |
| 15466 | CSGD | CASTILLO GARCIA, ROSENDO | | | SCAC4 |
| 15467 | CSGF | CONTSHIP GULF LINE | | | SCAC3 |
| 15468 | CSGF | CASTRO GUIZAR, FORTUNATO | | | SCAC4 |
| 15469 | CSGG | CAPES SHIPPING AGENCIES INC | | | SCAC3 |
| 15470 | CSGG | CAPES SHIPPING AGENCIES INC | | | SCAC4 |
| 15471 | CSGH | CURTIS, GLENN H | | | SCAC3 |
| 15472 | CSGI | CHANDLERS SAND & GRAVEL | | | SCAC3 |
| 15473 | CSGJ | COSGROVE, J P TRUCKING | | | SCAC3 |
| 15474 | CSGK | CARRERA SHIPPING COMPANY LIMITED | | | SCAC3 |
| 15475 | CSGK | CENTRAL MULTI STOP INC | | | SCAC4 |
| 15476 | CSGL | CONTSHIP GULF LINE | | | SCAC3 |
| 15477 | CSGM | CAST CARTAGE | | | SCAC3 |
| 15478 | CSGN | CORAL SPRINGS MOVING & STORAGE | | | SCAC4 |
| 15479 | CSGP | CARRIER SALES GROUP | | | SCAC4 |
| 15480 | CSGPL | CARMENSIMI GRUP SRL | | RO | VKM |
| 15481 | CSGQ | CAROLINA STORAGE & TRANSFER CO | | | SCAC3 |
| 15482 | CSGQ | COMMERCIAL DELIVERY SYSTEMS LLC | | | SCAC4 |
| 15483 | CSGR | CASSETTE, GERALD TRUCKING | | | SCAC3 |
| 15484 | CSGS | CONTRACTORS SAND AND GRAVEL SUPPLY | | | SCAC3 |
| 15485 | CSGT | CSG TRUCKING | | | SCAC3 |
| 15486 | CSGT | COOL SPRINGS TRUCKING | | | SCAC4 |
| 15487 | CSGU | VOS TANK LOGISTICS BORN B V | | | SCAC4 |
| 15488 | CSGV | CORNELL SHIPPING INC | | | SCAC3 |
| 15489 | CSGW | CASTAG/CO | | | SCAC3 |
| 15490 | CSGX | Central Sand and Gravel Co. | added 7/1973; 1/1975-1/1980; eliminated 1/1984 | | NAKINA |
| 15491 | CSGX | Union Tank Car Co. | added 10/1953; 7/1954-10/1957; eliminated 1/1958 | | NAKINA |
| 15492 | CSGX | Transit Co., Ltd. | 7/1930-1/1952; eliminated 10/1953 | | NAKINA |
| 15493 | CSGX | Transit Co., Ltd. | 4/38-1/52; eliminated 10/53 | | NRHS |
| 15494 | CSGX | Union Tank Car Co. | added 10/53; 10/57; eliminated 1/58 | | NRHS |
| 15495 | CSGX | Central Sand and Gravel Co. | added 7/73; 1/75-1/80 | | NRHS |
| 15496 | CSGX | *UNION TANK CAR CO. [TRANSIT CO., LTD.} | | | PWRC |
| 15497 | CSGX | *CENTRAL SAND & GRAVEL CO. | | | PWRC |
| 15498 | CSGX | Central Sand and Gravel | | | RSRV |
| 15499 | CSGY | COASTAL STEVEDORING COMPANY | | | SCAC3 |
| 15500 | CSGY | COASTAL STEVEDORING COMPANY | | | SCAC4 |
