| 1 | CNP | Centennial Air, Inc. | Callsign: Ceres, | RP | AVCODES |
| 2 | CNP | Private Air Inc. | Callsign: Cargo North, Name changed to Levaero Aviation Inc. | CDN | AVCODES |
| 3 | CNP | Levaero Aviation Inc. | Callsign: Cargo North, Name changed from Private Air Inc. | CDN | AVCODES |
| 4 | CNPA | C N C TRANSPORTATION L L C | | | SCAC4 |
| 5 | CNPB | C N GROUP INC | | | SCAC4 |
| 6 | CNPC | C & P CORPORATION | | | SCAC3 |
| 7 | CNPC | CAROLINA TRANSPORTATION INC | | | SCAC4 |
| 8 | CNPD | CANFIELD PRODUCTS CORP | | | SCAC3 |
| 9 | CNPD | CASEROS NAVIGATION PTE LTD SINGAPOR | | | SCAC4 |
| 10 | CNPE | CONTAINER PIER CORP | | | SCAC3 |
| 11 | CNPE | CONDOR EXPRESS | | | SCAC4 |
| 12 | CNPF | CONCEPT FREIGHT SERVICE, INC. | | | SCAC3 |
| 13 | CNPF | CONCEPT FREIGHT INC | | | SCAC4 |
| 14 | CNPG | C & P TRUCKING | | | SCAC3 |
| 15 | CNPG | CONTINENTAL PAVING INC | | | SCAC4 |
| 16 | CNPH | CANT PRODUCTS INC | | | SCAC3 |
| 17 | CNPH | CANADIAN PACIFIC RAILWAY & D & H LI | | | SCAC4 |
| 18 | CNPK | CANPOL TRUCKING LTD | | | SCAC4 |
| 19 | CNPL | CONTAINERS POOL | | | SCAC3 |
| 20 | CNPM | C & P MOTOR SERVICE INC | | | SCAC3 |
| 21 | CNPN | C & P TRUCKING COMPANY INC | | | SCAC3 |
| 22 | CNPN | CANNON EXPRESS INC | | | SCAC4 |
| 23 | CNPO | CONTAINER TRANSPORTATION CORPORATIO | | | SCAC3 |
| 24 | CNPO | CENTURION POULTRY INC | | | SCAC4 |
| 25 | CNPP | CENTRAL PLAINS TRANSPORT | | | SCAC3 |
| 26 | CNPP | CENTRAL PACIFIC EXPRESS INC | | | SCAC4 |
| 27 | CNPQ | COMMERCIAL & PACKAGE DELIVERY | | | SCAC3 |
| 28 | CNPQ | CONCEPT PLASTICS LTD | | | SCAC4 |
| 29 | CNPS | CONOCOPHILLIPS COMPANY | | | SCAC4 |
| 30 | CNPT | C & P TOWING INC | | | SCAC3 |
| 31 | CNPU | CANADIAN NATIONAL RWY | | | PWRC |
| 32 | CNPU | Canadian National Railway | | | RSRV |
| 33 | CNPU | CANADIAN NATIONAL | | | SCAC3 |
| 34 | CNPU | CANADIAN NATIONAL | | | SCAC4 |
| 35 | CNPV | CONNECT MOTORSPORTS LLC | | | SCAC4 |
| 36 | CNPX | Canadian International Paper Co. | 7/1937-1/1941 | | NAKINA |
| 37 | CNPX | Canadian International Paper Co. | Apr-38 | | NRHS |
| 38 | CNPX | CANADIAN INTERNATIONAL PAPER CO. | | | PWRC |
| 39 | CNPY | CROSS ENTERPRISES INC | | | SCAC4 |
| 40 | CNPZ | CANADIAN NATIONAL RWY | | | PWRC |
| 41 | CNPZ | Canadian National Railway | | | RSRV |
| 42 | CNPZ | CANADIAN NATIONAL RAILWAYS | | | SCAC4 |