| 1 | CHA | Chiltern Airways | Callsign: Cavalier, | GB | AVCODES |
| 2 | CHA | Central Flying Service, Inc. | Callsign: Charter Central, | USA | AVCODES |
| 3 | CHA | Central Flying Service | | | ICAO1 |
| 4 | CHA | Swiss army | | CH | TRAFFIC |
| 5 | CHAA | CHADDERTON TRUCKING INC | | | SCAC3 |
| 6 | CHAA | CHADDERTON TRUCKING INC | | | SCAC4 |
| 7 | CHAB | | City: Chabarovsk | SU | TRAFFIC |
| 8 | CHAD | CHADBOURNE, DOUG & SON TRUCKING | | | SCAC4 |
| 9 | CHAE | CHATHAM BIOTEC LTD | | | SCAC4 |
| 10 | CHAG | CHAGENTS INC | | | SCAC3 |
| 11 | CHAH | CHALLENGER FREIGHTWAYS | | | SCAC3 |
| 12 | CHAH | CHAHAL TRUCKING | | | SCAC4 |
| 13 | CHAI | CH-AN INC | | | SCAC3 |
| 14 | CHAI | CHACHIES SALSA & SANTA BARBARA SALS | | | SCAC4 |
| 15 | CHAJ | CHAMPS MUSHROOMS INC | | | SCAC4 |
| 16 | CHAL | CHALUT TRANSPORT (1974) INC | | | SCAC3 |
| 17 | CHAL | CHALLENGE LOGISTICS | | | SCAC4 |
| 18 | CHAM | CHI-AM MOTOR COACH INC | | | SCAC3 |
| 19 | CHAN | CHAN, LINCOLN | | | SCAC3 |
| 20 | CHAN | CHANDRIS (HELLAS) INC | | | SCAC4 |
| 21 | CHAND | Chilean Transandine | | RCH | TRAFFIC |
| 22 | CHANG | Changchun Subway | | PRC | TRAFFIC |
| 23 | CHAO | CALLAHAN COMPANY, THE | | | SCAC3 |
| 24 | CHAP | CHAMBERS MOVING & STORAGE CO | | | SCAC3 |
| 25 | CHAP | CHAPIN LOGISTICS INC | | | SCAC4 |
| 26 | CHAQ | CHAMBERS-THOMPSON MOVING & STORAGE | | | SCAC3 |
| 27 | CHAQ | CHALER CORPORATION | | | SCAC4 |
| 28 | CHAR | CHARIOT EXPRESS INC | | | SCAC4 |
| 29 | CHARLB | Charlesbourg Bus Company | | CDN | TRAFFIC |
| 30 | CHART | Charterways Transportation | | CDN | TRAFFIC |
| 31 | CHAS | CHANDLERS AUTO EXPRESS | | | SCAC3 |
| 32 | CHAT | Chattahoochee Bay R.R. Co., Inc. | added 10/2006 | | NAKINA |
| 33 | CHAT | Chattahoochee & Gulf R.R. Co., Inc. | added 10/2003; 7/2005; eliminated 10/2006 | | NAKINA |
| 34 | CHAT | *CHATEAUGAY RAILROAD | | | PWRC |
| 35 | CHAT | +CHATTAHOOCHEE BAY RAILROAD CO., INC. [CHATTAHOOCHIE & GULF RR CO.} | | | PWRC |
| 36 | CHAT | Chattahoochee and Gulf Railroad | | | RSRV |
| 37 | CHAT | CHARTIER, M L INC | | | SCAC3 |
| 38 | CHAT | CHATTAHOOCHEE BAY RAILROAD INC | | | SCAC4 |
| 39 | CHAT | Chatham Transit (Ontario) | | CDN | TRAFFIC |
| 40 | CHAU | COMBINED TRANSPORT GROUP, INC. | | | PWRC |
| 41 | CHAU | Combined Transport Group | | | RSRV |
| 42 | CHAU | COMBINED TRANSPORT GROUP | | | SCAC3 |
| 43 | CHAU | CHARIOT INTERMODAL INC | | | SCAC4 |
| 44 | CHAV | CHAMP, LEE E | | | SCAC3 |
| 45 | CHAV | CHAVEZ VELAZCO, ARTURO | | | SCAC4 |
| 46 | CHAW | CHATHAM TRUCKING LLC | | | SCAC4 |
| 47 | CHAX | Chartrand's Tank Car Service, Inc. | added 10/1958; 4/1961-7/2000; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 48 | CHAX | Chartrand's Tank Car Service | added 4/1958; eliminated 10/1958 | | NAKINA |
| 49 | CHAX | Chartrand's Tank Car Rentals | added 1/1958; eliminated 4/1958 | | NAKINA |
| 50 | CHAX | Chartrand's Tank Car Service | added 7/1953; 7/1954-10/1957; eliminated 1/1958 | | NAKINA |
| 51 | CHAX | John W. Chartrand (Chartrand's Traffic Service) | 4/1947-1/1952; eliminated 7/1953 | | NAKINA |
| 52 | CHAX | John W. Chartrand (Chartrand's Traffic Service) | Jan-52 | | NRHS |
| 53 | CHAX | Chartrand's Tank Car Service | 10/57; eliminated 1/58 | | NRHS |
| 54 | CHAX | Chartrand's Tank Car Rentals | added 1/58; eliminated 10/58 | | NRHS |
| 55 | CHAX | Chartrand's Tank Car Service, Inc. | added 10/58; 4/61-7/2000 | | NRHS |
| 56 | CHAX | *CHARLOTTE SOUTHERN RAILROAD | | | PWRC |
| 57 | CHAX | +CHARTRAND'S TANK CAR SERVICE, INC. | | | PWRC |
| 58 | CHAX | Chartrand's Tank Car Service | | | RSRV |
| 59 | CHAX | CHARTRANDS TANK CAR SERVICE INC | | | SCAC3 |
| 60 | CHAX | Chartrand's Tank Car Service, Inc. | | USA | TRAFFIC |
| 61 | CHAZ | CHAMPION AUTOMOTIVE | | | PWRC |
