| 1 | CEN | Central Airways Corp. | Callsign: Central Airways, | CDN | AVCODES |
| 2 | CEN | Central Air Transpsort Services | IATA: ZO, Callsign: Shumba, | ZW | AVCODES |
| 3 | CEN | Celanese Emulsions Norden AB | | SE | VKM |
| 4 | CENA | CELLOFOAM NORTH AMERICA INC | | | SCAC4 |
| 5 | CENAF | CENEDESE ARMAMENTO FERROVIARIO S.r.l. | | IT | VKM |
| 6 | CENB | Centrebus | | GB | TRAFFIC |
| 7 | CENC | CENTRAL AIR FREIGHT SERVICE | | | SCAC3 |
| 8 | CENC | Centennial Coal Rail | | AUS | TRAFFIC |
| 9 | CEND | CENTRAL DISTRIBUTORS INC | | | SCAC4 |
| 10 | CENE | CLASSIC ENTERPRISES | | | SCAC3 |
| 11 | CENE | CENEX PETRO SERVE | | | SCAC4 |
| 12 | CENE | Cenedese S.p.A. | | I | TRAFFIC |
| 13 | CENED | Cenedese SPA | | IT | VKM |
| 14 | CENF | CENTRAL FREIGHT LINES, INC | | | SCAC3 |
| 15 | CENF | CENTRAL FREIGHT LINES INC | | | SCAC4 |
| 16 | CENG | CORLISS, E N INC | | | SCAC3 |
| 17 | CENG | CLASSIC ENGINE SUPPLIES INC | | | SCAC4 |
| 18 | CENH | CENTRAL CARTINE CO, INC | | | SCAC3 |
| 19 | CENI | CENTRE CARRIERS CORP | | | SCAC3 |
| 20 | CENI | CENTRE CARRIERS CORP | | | SCAC4 |
| 21 | CENJ | CARSON ENTERPRISES INC | | | SCAC3 |
| 22 | CENJ | CONTINENTAL ENTERPRISES | | | SCAC4 |
| 23 | CENK | CENTRAN INC | | | SCAC3 |
| 24 | CENK | CNR ENTERPRISES | | | SCAC4 |
| 25 | CENL | CENTRAL EXPRESS, INC | | | SCAC3 |
| 26 | CENM | CANADIAN ENTOMOLOGICAL SUPPLIES | | | SCAC4 |
| 27 | CENN | CENTENNIAL TRANSPORT & LEASING LTD | | | SCAC4 |
| 28 | CENO | CENTAUR TRUCKING COMPANY | | | SCAC3 |
| 29 | CENP | CENTRAL TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 30 | CENP | CENTRAL TRANSPORTATION SYSTEMS INC | | | SCAC4 |
| 31 | CENQ | CENTRA | | | SCAC3 |
| 32 | CENQ | CHAVEZ, ENRIQUE | | | SCAC4 |
| 33 | CENR | CENTRAL GRAIN HAULERS, INC | | | SCAC3 |
| 34 | CENS | CENTRAL IOWA STORAGE CO | | | SCAC3 |
| 35 | CENS | CHANDILA ENTERPRISE | | | SCAC4 |
| 36 | CENT | CARKOR ENTERPRISES | | | SCAC4 |
| 37 | CENT | Centex | Real: CENTEX | USA | TRAFFIC |
| 38 | CENTA | Central Avenue IBOA | | USA | TRAFFIC |
| 39 | CENTRA | Centra | | GB | TRAFFIC |
| 40 | CENU | CUADROS ELECTRICOS NAZARENOS, S.L. | | E | BIC |
| 41 | CENU | CENCOLONIA | | | SCAC3 |
| 42 | CENU | CHUBU EKIYU LTD | | | SCAC4 |
| 43 | CENV | CENTRAL MOTOR FREIGHT COMPANY | | | SCAC3 |
| 44 | CENV | CONLEY ENTERPRISES | | | SCAC4 |
| 45 | CENX | Western Aggregates, Inc. | added 1/1981; 1/1994; eliminated 7/2000; 7/2000 (not listed) | | NAKINA |
| 46 | CENX | General American Transportation Corp. | added 4/1954; 7/1954-10/1957; eliminated 10/1960; 4/1961 (not listed) | | NAKINA |
| 47 | CENX | Central Chemical, Division of Wilson & Co., Inc. | 1/1941-1/1952; eliminated 4/1954 | | NAKINA |
| 48 | CENX | Central Chemical Co. | 8/1920-4/1938 | | NAKINA |
| 49 | CENX | Central Chemical Co. | Apr-38 | | NRHS |
| 50 | CENX | Central Chemical, Division of Wilson & Co. | 1/52; eliminated 4/54 | | NRHS |
| 51 | CENX | General American Transportation Corp. | added 4/54; 10/57; eliminated 10/60; 4/61 | | NRHS |
| 52 | CENX | Western Aggregates, Inc. | added 1/81; 1/94-7/2000; eliminated 7/2000 | | NRHS |
| 53 | CENX | *CENTRAL CHEMICAL CO. DIV. WILSON & CO. | | | PWRC |
| 54 | CENX | *WESTERN AGGREGATES, INC. [(GATC) CUMBERLAND GASOLINE CO.] | | | PWRC |
| 55 | CENX | Central Chemical Co. (Western Aggregates) | | | RSRV |
| 56 | CENY | CHENEY TRANSPORTATION INC | | | SCAC4 |