| 1 | CX | Cathay Pacific Airways Ltd. | ICAO: CPA, Callsign: Cathay, IATA Prefix: 160, ICAO designator changed from CPX | HK | AVCODES |
| 2 | CX | Cathay Pacific Airways Ltd. | ICAO: CPX, Callsign: Cathay, IATA Prefix: 160, ICAO designator changed to CPA | HK | AVCODES |
| 3 | CX | Burlington Refrigerator Express Co. | 10/1957; eliminated 1/1959 | | NAKINA |
| 4 | CX | Colorado Southern (Burlington Refrigerator Express Co.) | 7/1935-1/1954 | | NAKINA |
| 5 | CX | Burlington Refrigerator Express Co. | 1/52-10/57; eliminated 1/59 | | NRHS |
| 6 | CX | Colorado Southern (Burlington Refrigerator Express) | Apr-38 | | NRHS |
| 7 | CX | COLORADO SOUTHERN (BURLINGTON REFRIGERATOR EXPRESS CO.) | | | PWRC |
| 8 | CX | Connexxion | Real: CXX | NL | TRAFFIC |
| 9 | CX | CEMEX Czech Republic, s.r.o. | | CZ | VKM |
| 10 | CXA | Xiamen Airlines | IATA: MF, Callsign: Xiamen Air, IATA Prefix: 731, IATA designator changed to MF | PRC | AVCODES |
| 11 | CXA | Xiamen Airlines | IATA: MF, Callsign: Xiamen Air, IATA Prefix: 731, IATA designator changed from MF* | PRC | AVCODES |
| 12 | CXA | Xiamen Airlines | IATA: MF | | ICAO1 |
| 13 | CXAC | CANADIAN ROCKIES EXPRESS CO INC | | | SCAC4 |
| 14 | CXAD | CONTINENTAL TRANSPORTATION AND DIST | | | SCAC4 |
| 15 | CXAI | CR TRANSPORT INC | | | SCAC4 |
| 16 | CXAL | COLEMAN TRANSPORTATION LLC | | | SCAC4 |
| 17 | CXAN | CIRCLE TRANSPORTATION INC | | | SCAC4 |
| 18 | CXAO | CANNAN TRANSPORTATION | | | SCAC4 |
| 19 | CXAP | CIAL TRANSPORT | | | SCAC4 |
| 20 | CXAR | CROSS TRANSPORTATION | | | SCAC4 |
| 21 | CXAS | COX ASSOCIATES | | | SCAC3 |
| 22 | CXB | Comlux Aruba N.V. | IATA: CS, Callsign: Starlux, | ARU | AVCODES |
| 23 | CXBL | COXBILL TRUCKING | | | SCAC3 |
| 24 | CXBT | COMMON TRANSPORTATION INC | | | SCAC4 |
| 25 | CXCB | CITY EXPRESS CAB INC | | | SCAC3 |
| 26 | CXCC | C & C CARTAGE INC | | | SCAC3 |
| 27 | CXCD | CODEX COMMERCE LLC | | | SCAC4 |
| 28 | CXCH | COX, CHUCK TRUCKING | | | SCAC3 |
| 29 | CXCH | CROSSROADS EXPRESS LLC | | | SCAC4 |
| 30 | CXCI | CARTAGE XPERTS CO | | | SCAC4 |
| 31 | CXCL | COX, CONNIE LEE | | | SCAC3 |
| 32 | CXCL | CTEXCO | | | SCAC4 |
| 33 | CXCN | CORPORATE EXPRESS CANADA INC | | | SCAC4 |
| 34 | CXCO | CITY EXPRESS COURIER | | | SCAC4 |
| 35 | CXCP | CCCP | | | SCAC4 |
| 36 | CXCQ | CROIX CARRIERS INC | | | SCAC4 |
| 37 | CXCR | COMTRUX CARRIERS INC | | | SCAC3 |
| 38 | CXCR | COMTRUX CARRIERS INC | | | SCAC4 |
| 39 | CXCS | COREX CONTAINER STATION INC | | | SCAC3 |
| 40 | CXCT | COAST TO COAST TRANSPORT | | | SCAC4 |
| 41 | CXCU | MATSON NAVIGATION COMPANY, INC | | USA | BIC |
| 42 | CXCU | Matson Navigation | | | RSRV |
| 43 | CXCU | CSX LINES LLC | | | SCAC4 |
| 44 | CXCV | CAPITAL TRANSPORTATION CUSTOMS CLEA | | | SCAC4 |
| 45 | CXCW | CTX COWTOWN XPRESS LLC | | | SCAC4 |
| 46 | CXCZ | CSX LINES, LLC | | | PWRC |
| 47 | CXCZ | CSX Lines | | | RSRV |
| 48 | CXCZ | CSX LINES LLC | | | SCAC4 |
| 49 | CXDC | COX, DON C | | | SCAC3 |
| 50 | CXDO | COMAL TAXIDERMY STUDIO | | | SCAC4 |
| 51 | CXDS | CAL-QUEST EXPRESS LLC | | | SCAC4 |
| 52 | CXDU | SEACO SRL | | BDS | BIC |
| 53 | CXDU | CRONOS EQUIPMENT (BERMUDA) LTD | | | SCAC4 |
| 54 | CXE | Caicos Express Airways | IATA: 9Q, Callsign: Caicos, | TC | AVCODES |
| 55 | CXEE | CHASERS EXPRESS LLC | | | SCAC4 |
| 56 | CXEI | CHAMLIAN ENTERPRISES INC | | | SCAC3 |
| 57 | CXEL | CROSS COUNTRY EXPRESS LLC | | | SCAC4 |
| 58 | CXEP | CONNERS EXPRESS | | | SCAC3 |
| 59 | CXEP | CAN X EXPRESS TRANSPORT LTD | | | SCAC4 |
| 60 | CXEQ | CSR EXPRESS INC | | | SCAC4 |
| 61 | CXES | CT EXPRESS LLC | | | SCAC4 |
| 62 | CXEU | {"CET" CO., LTD.};ZIPCODE=214514 | | PRC | BIC |
| 63 | CXF | VCAP Aviation LLC | Callsign: Cards Flight, | USA | AVCODES |
| 64 | CXFC | CONTRAX FURNISHINGS INC | | | SCAC4 |
| 65 | CXFF | CONEX FREIGHT FORWARDING INC | | | SCAC3 |
| 66 | CXFF | CONEX FREIGHT FORWARDING INC | | | SCAC4 |
| 67 | CXFI | CAPITOL EXPRESS FREIGHT INC | | | SCAC4 |
| 68 | CXFL | CATHEDRAL TRANSFER LLC | | | SCAC4 |
| 69 | CXFN | CANEX FREIGHT SYSTEMS INC | | | SCAC4 |
| 70 | CXFQ | CLINE TRANSFER INC | | | SCAC4 |
| 71 | CXGA | CRC TRANSPORTATION OF GEORGIA LLC | | | SCAC4 |
| 72 | CXGC | CROMCO TRANSPORT GROUP LLC | | | SCAC4 |
| 73 | CXGL | COMAX GLOBAL LOGISTICS SYSTEM INC | | | SCAC4 |
| 74 | CXGQ | CAROLINA TRANSPORT OF GREENSBORO IN | | | SCAC4 |
| 75 | CXGS | COLFAX GRANGE SUPPLY | | | SCAC4 |
| 76 | CXGV | CANAMEX LOGISTICS SERVICES INC | | | SCAC4 |
| 77 | CXH | China Xinhua Airlines | IATA: XW, Callsign: Xinhua, IATA Prefix: 779, Merged with Shanxi Airlines and Chang An Airlines to form Grand China Air, a subsidiary of Hainan Airlines on 29 November 2007. | PRC | AVCODES |
| 78 | CXH | China Xinhua Airlines | IATA: XO | | ICAO1 |
| 79 | CXH | China Xinhua Airlines | Real: CXH, XW | PRC | TRAFFIC |
| 80 | CXHF | COX HONEY FARMS INC | | | SCAC4 |
| 81 | CXHU | CEX (HKG) LIMITED | | HK | BIC |
| 82 | CXI | Shanxi Airlines | IATA: 8C, Callsign: Shanxi, merged with China Xinhua Airlines and Chang An Airlines to form Grand China Air, a subsidiary of Hainan Airlines in 2009. | PRC | AVCODES |
| 83 | CXI | Touristic Aviation Services Ltd. t/a Corendon Airlines Europe | IATA: XR, Callsign: Touristic, IATA Prefix: 187, | M | AVCODES |
| 84 | CXI | Shanxi Airlines | IATA: 8C | | ICAO1 |
| 85 | CXI | Shan Xi Airlines | Real: CXI, 8C | PRC | TRAFFIC |
| 86 | CXIB | COMBINED EXPRESS, INC | | | SCAC3 |
| 87 | CXIB | COMBINED EXPRESS INC | | | SCAC4 |
| 88 | CXIC | CALINEX INC | | | SCAC3 |
| 89 | CXIC | CARGILL TRANSPORTATION INC | | | SCAC4 |
| 90 | CXID | CANAM TAXIDERMY | | | SCAC4 |
| 91 | CXIF | CORPORATE TRANSPORTATION INC | | | SCAC4 |
| 92 | CXIG | CTX LOGISTICS INC | | | SCAC4 |
| 93 | CXIH | CTX INC | | | SCAC3 |
| 94 | CXII | COAST XPRESS INC | | | SCAC4 |
| 95 | CXIM | CHEETAH EXPRESS INC | | | SCAC4 |
| 96 | CXIN | CENTENNIAL EXPRESS INC | | | SCAC3 |
| 97 | CXIN | COMNETIX INC | | | SCAC4 |
| 98 | CXIO | CALEXICO WAREHOUSE & TRANSFER INC | | | SCAC4 |
| 99 | CXIP | COSMO EXPRESS INTERNATIONAL CORPORA | | | SCAC4 |
| 100 | CXIQ | C X I | | | SCAC4 |
