| 1 | CNW | China Northwest Airlines | IATA: WH, Callsign: China Northwest, IATA Prefix: 783, Merged into China Eastern. Formerly CAAC Xian region | PRC | AVCODES |
| 2 | CNW | Wuhan Airlines | Callsign: Wuhan Air, | PRC | AVCODES |
| 3 | CNW | Continental Airways | | MD | AVCODES |
| 4 | CNW | North-Western Cargo International Airlines Co., Ltd. | IATA: CO, Callsign: Tang, IATA Prefix: 966, Established in 2016. | PRC | AVCODES |
| 5 | CNW | China Northwest Airlines | IATA: WH | | ICAO1 |
| 6 | CNW | Union Pacific R.R. Co. | 7/2000-7/2005 | | NAKINA |
| 7 | CNW | Chicago and North Western Ry. Co. | added 1/1995; eliminated 10/1995 | | NAKINA |
| 8 | CNW | Chicago and North Western Transportation Co. | 1/1975-1/1994; eliminated 1/1995 | | NAKINA |
| 9 | CNW | Chicago and North Western Ry. Co. | 4/1938-10/1966 | | NAKINA |
| 10 | CNW | Chicago and North Western Ry. Co. | 4/38-10/66 | | NRHS |
| 11 | CNW | Chicago and North Western Transportation Co. | 1/75-1/94; eliminated 1/95 | | NRHS |
| 12 | CNW | Chicago and North Western Ry. Co. | added 1/95; eliminated 10/95 | | NRHS |
| 13 | CNW | Union Pacific R.R. Co. | Jul-00 | | NRHS |
| 14 | CNW | UP [CHICAGO & NORTH WESTERN TRANS CO] [CHICAGO & NORTH WESTERN RWY.] | | | PWRC |
| 15 | CNW | Chicago and North Western Railway (Union Pacific Railroad) | | | RSRV |
| 16 | CNW | Chicago & North Western | | USA | TRAFFIC |
| 17 | CNWA | C N W TRANSPORTATION CO. | | | PWRC |
| 18 | CNWA | C & W TRANSPORTATION CO | | | SCAC3 |
| 19 | CNWB | CRANE WEST INC | | | SCAC3 |
| 20 | CNWB | CRANE WEST INC | | | SCAC4 |
| 21 | CNWC | CONFER, WILLIAM C | | | SCAC3 |
| 22 | CNWC | COX, NEIL WOODCARVING | | | SCAC4 |
| 23 | CNWE | CANWEST PROPANE LTD | | | SCAC4 |
| 24 | CNWG | C & W TRANSPORTING INC | | | SCAC3 |
| 25 | CNWH | C & W HORSE TRANSPORTATION INC. | | | PWRC |
| 26 | CNWH | C & W HORSE TRANSPORTATION INC | | | SCAC3 |
| 27 | CNWI | CONWAY TRANSPORTATION INC | | | SCAC3 |
| 28 | CNWK | CAL-NORTHWEST TRUCKING INC | | | SCAC3 |
| 29 | CNWL | CORNWELL TRANSPORTATION | | | SCAC3 |
| 30 | CNWL | CANWELD DIESEL INC | | | SCAC4 |
| 31 | CNWM | CHICAGO AND NORTHWESTERN TRANSPORTA | | | SCAC3 |
| 32 | CNWN | C A T S NATIONWIDE INC | | | SCAC3 |
| 33 | CNWO | CAL TRANS NETWORK | | | SCAC3 |
| 34 | CNWP | COUNTRYWIDE TRANSPORTATION INC | | | SCAC4 |
| 35 | CNWQ | CENTURY WAREHOUSE INC | | | SCAC3 |
| 36 | CNWR | C L NATIONWIDE INC | | | SCAC3 |
| 37 | CNWR | C L NATIONWIDE INC | | | SCAC4 |
| 38 | CNWS | Carolina & Northwestern R.R., Inc. | added 10/1990; 1/1994; eliminated 1/1995 | | NAKINA |
| 39 | CNWS | Chicago and North Western Transportation Co. | 1/1980 | | NAKINA |
| 40 | CNWS | Chicago and North Western Transportation Co. | Jan-80 | | NRHS |
| 41 | CNWS | Carolina & Northwestern R.R., Inc. | added 10/90; 1/94; eliminated 1/95 | | NRHS |
| 42 | CNWS | *CAROLINA & NORTHWESTERN RAILROAD, INC (CEASED OPERATION) | | | PWRC |
| 43 | CNWS | *CHICAGO & NORTH WESTERN TRANSPORTATION CO. | | | PWRC |
| 44 | CNWS | Chicago and North Western Railway (Union Pacific Railroad) | | | RSRV |
| 45 | CNWS | CAROLINA & NORTHWESTERN RAILROAD IN | | | SCAC3 |
| 46 | CNWS | Carolina & Northwestern R.R., Inc. | | USA | TRAFFIC |
| 47 | CNWT | C AND W HORSE TRANSPORTATION INC | | | SCAC3 |
| 48 | CNWT | CARGO NORTH WEST S A DE C V | | | SCAC4 |
| 49 | CNWX | The Canadian Wheat Board | added 1/1973; 1/1975-7/2005 | | NAKINA |
| 50 | CNWX | The Canadian Wheat Board | added 1/73; 1/75-7/2000 | | NRHS |
| 51 | CNWX | *CHICAGO & NORTHWESTERN | | | PWRC |
| 52 | CNWX | +THE CANADIAN WHEAT BOARD | | | PWRC |
| 53 | CNWX | Canadian Wheat Board | | | RSRV |
| 54 | CNWX | THE CANADIAN WHEAT BOARD | | | SCAC4 |
| 55 | CNWX | Canadian Wheat Board | | CDN | TRAFFIC |
| 56 | CNWY | Con-way | | | SCAC2 |
| 57 | CNWY | CON-WAY TRANSPORTATION SERVICES, INC. | | | SCAC3 |
| 58 | CNWY | CON-WAY FREIGHT | | | SCAC4 |
| 59 | CNWZ | UP [CHICAGO & NORTH WESTERN TRANS CO] | | | PWRC |
| 60 | CNWZ | Chicago and North Western Railway (Union Pacific Railroad) | | | RSRV |
| 61 | CNWZ | UNION PACIFIC RAILROAD COMPANY | | | SCAC4 |
