| 1 | CNS | Cobalt Air, LLC | Callsign: Chronos, | USA | AVCODES |
| 2 | CNS | Centennial Flight Centre Ltd. d/b/a Centennial Airlines | IATA: FA, Callsign: Centennial, IATA designator FA voluntary surrendered | CDN | AVCODES |
| 3 | CNS | Centennial Flight Centre | | | ICAO1 |
| 4 | CNSA | CANUSA TRANSPORTATION LTD | | | SCAC4 |
| 5 | CNSB | C & S BRAY INC | | | SCAC3 |
| 6 | CNSB | CNS TRUCKING LLC | | | SCAC4 |
| 7 | CNSC | CONSOCO TRANSPORT | | | SCAC3 |
| 8 | CNSC | CONSENSUS SHIPPING CORPORATION | | | SCAC4 |
| 9 | CNSD | COORDINATED DISTRIBUTION SYSTEMS IN | | | SCAC3 |
| 10 | CNSD | CANADIAN ASSOCIATION OF MOLDMAKERS | | | SCAC4 |
| 11 | CNSG | CALIFORNIA NATIONAL SYSTEMS INC | | | SCAC3 |
| 12 | CNSG | C & S LOGISTICS INC | | | SCAC4 |
| 13 | CNSH | CORNISH CHARLES E | | | SCAC3 |
| 14 | CNSH | CANSHIP UGLAND LTD | | | SCAC4 |
| 15 | CNSI | C & S TRUCKING | | | SCAC3 |
| 16 | CNSJ | CONTAINER SHIPS ASHORE | | | SCAC3 |
| 17 | CNSK | CENTRAL & SOUTHERN TRANSFER INC | | | SCAC3 |
| 18 | CNSK | CHARLESTON STEEL & METAL CO INC | | | SCAC4 |
| 19 | CNSL | CERTAIN SHIPPING LIMITED | | | SCAC3 |
| 20 | CNSM | CHICAGO NORTH SHORE & MILWAUKEE RWY | | | PWRC |
| 21 | CNSM | CONSOLIDATED AUTO TRANSPORT US LLC | | | SCAC4 |
| 22 | CNSM | Chicago North Shore & Milwaukee | Real: CNS&M | USA | TRAFFIC |
| 23 | CNSN | CARROLL & SON | | | SCAC3 |
| 24 | CNSN | CO-OP NON STOCK TRANSPORT COMPANY | | | SCAC4 |
| 25 | CNSO | CERUTTI & SONS TRANSPORTATION CO | | | SCAC3 |
| 26 | CNSO | CONSTRUCT OIL COMPANY INC | | | SCAC4 |
| 27 | CNSP | COLONIAL STORAGE COMPANY | | | SCAC3 |
| 28 | CNSQ | C & S CARTAGE CO | | | SCAC3 |
| 29 | CNSR | CONTAINER SERVICE CORPORATION | | | SCAC3 |
| 30 | CNSR | CANADIAN AUTO STORES LIMITED | | | SCAC4 |
| 31 | CNSS | CANADIAN NATIONAL STEAMSHIPS | | | PWRC |
| 32 | CNSS | CNS EQUIPMENT INC | | | SCAC4 |
| 33 | CNST | CARLTON & STUBING INC | | | SCAC3 |
| 34 | CNST | C & S TRANSPORT INC | | | SCAC4 |
| 35 | CNSU | SPINNAKER LEASING CORPORATION | | USA | BIC |
| 36 | CNSU | CNS Logistics | | | RSRV |
| 37 | CNSV | C & S SERVICES INC | | | SCAC3 |
| 38 | CNSW | CONSOLIDATED WAREHOUSES INC | | | SCAC3 |
| 39 | CNSX | Consolidated Oil & Transportation Co., Inc. | added 1/1999; 7/2000; eliminated 4/2003; 7/2005 (not listed) | | NAKINA |
| 40 | CNSX | Columbia Naval Stores Co. (General American Tank Car Corp.) | 7/1935 | | NAKINA |
| 41 | CNSX | Columbia Naval Stores Co. | 8/1920 | | NAKINA |
| 42 | CNSX | Columbia Naval Stores Co. (Columbia Naval Stores Co. of Delaware) | 7/1923-7/1932 | | NAKINA |
| 43 | CNSX | Consolidated Oil & Transportation Co., Inc. | added 1/99; 7/2000 | | NRHS |
| 44 | CNSX | *COLUMBIA NAVAL STORES CO. | | | PWRC |
| 45 | CNSX | +CONSOLIDATED OIL & TRANSPORTATION, INC. | | | PWRC |
| 46 | CNSX | Consolidated Oil and Transportation | | | RSRV |
| 47 | CNSX | TRINITY INDUSTRIES LEASING COMPANY | | | SCAC4 |
| 48 | CNSY | CRIPPEN NORTHLAND SUPERIOR SUPPLY C | | | SCAC4 |
| 49 | CNSZ | NORTH SHORE MINIMG CO. [CYPRUS NORTH SHORE MINING] | | | PWRC |
