| 1 | CW | Air Marshall Islands, Inc. | ICAO: MRS, Callsign: Marshall Islands, IATA Prefix: 778, Name changed from Airline of the Marshall Islands | MH | AVCODES |
| 2 | CW | Air Continental Ltd. | ICAO: CWA, Callsign: Aircontinental, | GB | AVCODES |
| 3 | CW | Channel Airways | Callsign: Channel Air, | GB | AVCODES |
| 4 | CW | Air Swazi Cargo (Pty) Ltd. | ICAO: ZSC, Callsign: Swazi Cargo, ICAO designator changed to CWS | SD | AVCODES |
| 5 | CW | Airline of the Marshall Islands | ICAO: MRS, Callsign: Marshall Islands, IATA Prefix: 778, Name changed to Air Marshall Islands, Inc. | MH | AVCODES |
| 6 | CW | Chinggis Airways LLC | ICAO: CHS, Established in August 2011. Operations not started. | MGL | AVCODES |
| 7 | CW | Air Cargo Global s.r.o. | ICAO: CCC, Callsign: Global Cargo, IATA Prefix: 159, IATA Designator changed to CW*. IATA Designator changed from UB. | SK | AVCODES |
| 8 | CW | Air Cargo Global s.r.o. | ICAO: CCC, Callsign: Global Cargo, IATA Prefix: 159, Ceased opeations in December 2019. IATA Designator changed from CW. IATA Designator changed from UB. | SK | AVCODES |
| 9 | CW | SkyWest Charter LLC | ICAO: SCW, Callsign: Charter West, Subsidiary of SkyWest Airlines. | USA | AVCODES |
| 10 | CW | Colorado & Wyoming Ry. Co. | 1/1975-7/2005 | | NAKINA |
| 11 | CW | Colorado & Wyoming Ry. Co. | 1/75-7/2000 | | NRHS |
| 12 | CW | COLORADO & WYOMING RY. | | | PWRC |
| 13 | CW | Colorado and Wyoming Railroad | | | RSRV |
| 14 | CW | COLORADO & WYOMING RAILWAY | | | SCAC4 |
| 15 | CW | Colorado & Wyoming Ry. Co. | | USA | TRAFFIC |
| 16 | CW&E | The Chatham, Wallaceburg & Lake Erie Ry. Co. | 8/1920-7/1930 | | NAKINA |
| 17 | CW&E | Chatham, Wallaceburg & Lake Erie Ry. Co. | 23-Jul | | NRHS |
| 18 | CW&E | CHATHAM, WALLACEBURG & LAKE ERIE RWY. CO. | | | PWRC |
| 19 | CWA | Air Continental Ltd. | IATA: CW, Callsign: Aircontinental, | GB | AVCODES |
| 20 | CWA | Canada West Air Ltd. | Callsign: Canada West, | CDN | AVCODES |
| 21 | CWA | Canadian Western Airlines, Inc. | IATA: W2, Callsign: Canada Western, Founded in 2002. Ceased operations in 2004. | CDN | AVCODES |
| 22 | CWA | Can West Corporate Air Charters Ltd. | Callsign: Can West, | CDN | AVCODES |
| 23 | CWA | Canadian Western Airlines | IATA: W2 | | ICAO1 |
| 24 | CWA | Central Washington R.R. Co. | 7/2005 | | NAKINA |
| 25 | CWA | CENTRAL WASHINGTON RAILROAD CO. | | | PWRC |
| 26 | CWA | CENTRAL WASHINGTON RAILROAD COMPANY | | | SCAC4 |
| 27 | CWAA | CENTRAL WISCONSIN AUTO AUCTION INC | | | SCAC3 |
| 28 | CWAC | C & C TRUCKING | | | SCAC3 |
| 29 | CWAD | CONNER WAREHOUSING & DISTRIBUTION | | | SCAC3 |
| 30 | CWAE | CHIPPEWA AIR EXPRESS INC | | | SCAC3 |
| 31 | CWAG | CWA FREIGHT SYSTEMS INC | | | SCAC3 |
| 32 | CWAG | Cargowaggon | | EU | TRAFFIC |
| 33 | CWAH | CRUISE, WAYNE H TRUCK LINE | | | SCAC3 |
| 34 | CWAK | COUNTRY WIDE MOVING & STORAGE INC | | | SCAC4 |
| 35 | CWAL | CARLEN, WALTER L | | | SCAC3 |
| 36 | CWAM | COWAN TRANSPORTATION INC | | | SCAC3 |
| 37 | CWAM | CAUSEWAY MARINE LLC | | | SCAC4 |
| 38 | CWAN | CONAWAY TRUCKING & RACING LLC | | | SCAC4 |
| 39 | CWAO | CATHERWOOD, ALBERT | | | SCAC3 |
| 40 | CWAO | CORNWALL ROOF TRUSS LTD | | | SCAC4 |
| 41 | CWAP | CAMWAY TRANSPORTATION CORPORATION | | | SCAC3 |
| 42 | CWAQ | COMMONWEALTH WAREHOUSE & TRUCKING I | | | SCAC3 |
| 43 | CWAQ | COMMONWEA | | | SCAC4 |
| 44 | CWAR | CRISTINA WAREHOUSE CO INC | | | SCAC3 |
| 45 | CWAS | COWAN SYSTEMS LLC | | | SCAC4 |
| 46 | CWAT | CRESTWAY TRANSPORTATION | | | SCAC3 |
| 47 | CWAU | CHS | | | RSRV |
| 48 | CWAV | CALIFORNIA WAVES | | | SCAC4 |
| 49 | CWAW | COWAN SYSTEMS LLC (BROKERAGE DIV) | | | SCAC4 |
| 50 | CWB | CROSWELL OF WILLIAMSBURG LLC | | | SCAC4 |
| 51 | CWBA | CAL-WEST TARIFF BUREAU INC | | | SCAC3 |
| 52 | CWBA | COWBOY TRUCKING INC | | | SCAC4 |
| 53 | CWBC | CWB TOURS INC | | | SCAC3 |
| 54 | CWBF | CWB TRANSPORT INC | | | SCAC4 |
| 55 | CWBG | CON-WAY MULTIMODAL | | | SCAC4 |
| 56 | CWBH | COWBOY MOBILE HOME MOVERS INC | | | SCAC3 |
| 57 | CWBH | COWBOYS MOBILE HOMES INC | | | SCAC4 |
| 58 | CWBI | CARTWRIGHT, BILL | | | SCAC3 |
| 59 | CWBK | C W BROKERAGE | | | SCAC4 |
| 60 | CWBL | CARRAWAY, BILL TRUCKING | | | SCAC3 |
| 61 | CWBL | COWBOY USA LLC | | | SCAC4 |
| 62 | CWBM | CAL WESTERN BOAT MOVERS INC | | | SCAC3 |
| 63 | CWBM | CAL WESTERN BOAT MOVERS | | | SCAC4 |
| 64 | CWBO | COWBOY OIL CO | | | SCAC3 |
| 65 | CWBO | COWBOY OIL CO | | | SCAC4 |
| 66 | CWBP | CWB TRUCKING INC | | | SCAC4 |
| 67 | CWBQ | CITY WAREHOUSE CORP OF BALTIMORE | | | SCAC3 |
| 68 | CWBR | COWBOY TRUCKING | | | SCAC3 |
| 69 | CWBS | CRAWFORD BUS SERVICE INC | | | SCAC3 |
| 70 | CWBT | COWAN BOAT TRANSFER INC | | | SCAC3 |
| 71 | CWBT | CLEARWATER BOAT SALES | | | SCAC4 |
| 72 | CWBV | CWTS INC | | | SCAC4 |
| 73 | CWBX | C.W. Brooks, Inc. | added 7/1993; 1/1994-7/2005 | | NAKINA |
| 74 | CWBX | C.W. Brooks, Inc. | added 7/93; 1/94-7/2000 | | NRHS |
| 75 | CWBX | C. W. BROOKS, INC. | | | PWRC |
| 76 | CWBX | C. W. Brooks | | | RSRV |
| 77 | CWBX | C W BROOKS INC | | | SCAC4 |
| 78 | CWBY | COWBOY EXPRESS | | | SCAC4 |
| 79 | CWC | Centurion Air Cargo, Inc. | IATA: WE, Callsign: Challenge Cargo, IATA Prefix: 307, AOC surrendered in June 2018. Name changed from Challenge Air Cargo Inc w.e.f. 20 July 2001. Desginator WE reinstated by IATA | USA | AVCODES |
| 80 | CWC | Challenge Air Cargo, Inc. | IATA: WE, Callsign: Challenge Cargo, IATA Prefix: 307, Name changed to Centurion Air Cargo Inc. w.e.f. 20 July 2001. | USA | AVCODES |
| 81 | CWC | Challenge Air Cargo, Inc. | IATA: GJ, Callsign: Challenge Cargo, IATA designator changed to WE. Founded on 08 November 1985. | USA | AVCODES |
| 82 | CWC | Centurion Air Cargo | IATA: WE | | ICAO1 |
| 83 | CWC | Seaboard Coast Line R.R. Co. (Charleston & Western Carolina) | 1/1975-1/1980 | | NAKINA |
| 84 | CWC | Seaboard Coast Line R.R. Co. (Charleston & Western Carolina) | 1/75-1/80 | | NRHS |
| 85 | CWC | SEABOARD COAST LINE RAILROAD CO. [CHARLESTON & WESTERN CAROLINA RY] | | | PWRC |
| 86 | CWC | Charleston & Western Carolina R.R. | | USA | TRAFFIC |
| 87 | CWCA | COLDWAY CARRIERS INC | | | SCAC3 |
| 88 | CWCA | CAN WEST COMPONENT SERVICES INC | | | SCAC4 |
| 89 | CWCA | Centurion Air Cargo | Real: CWC | USA | TRAFFIC |
| 90 | CWCB | CROWLEY CARIBBEN TRANSPORT | | | SCAC3 |
| 91 | CWCB | CONCEPTS WEST CORP | | | SCAC4 |
| 92 | CWCC | COMMONWEALTH CARRIER CORPORATION | | | SCAC3 |
| 93 | CWCC | COUSINS WASTE CONTROL LLC | | | SCAC4 |
| 94 | CWCD | CARR, B W | | | SCAC3 |
| 95 | CWCE | CON-WAY CENTRAL EXPRESS INC | | | SCAC3 |
| 96 | CWCE | CON-WAY FREIGHT CENTRAL (DIV OF CON | | | SCAC4 |
| 97 | CWCF | COUNTY WIDE CARTAGE | | | SCAC3 |
| 98 | CWCG | CALLAWAY CARTAGE INC | | | SCAC3 |
| 99 | CWCG | C2C GLOBAL LOGISTICS INC | | | SCAC4 |
| 100 | CWCH | CATAWESE COACH COMPANY | | | SCAC3 |
