| 11301 | CNO | SAS Braathens | IATA: SK | | ICAO1 |
| 11302 | CNO | Canadian Northern Ontario Ry. (Canadian National Rys.) | 8/1920-7/1923 | | NAKINA |
| 11303 | CNO | Canadian Northern Ontario Ry. (Canadian National Rys.) | 23-Jul | | NRHS |
| 11304 | CNO | CANADIAN NNATIONAL RWY. [CANADIAN NORTHERN ONTARIO RWY.] | | | PWRC |
| 11305 | CNOA | CENTENO, OSCAR A TRUCKING | | | SCAC3 |
| 11306 | CNOB | CARR & ORMSBY TRANSPORT INC | | | SCAC3 |
| 11307 | CNOC | CNS LOGISTICS INC | | | SCAC4 |
| 11308 | CNOD | CARSONS OVERLAND TRUCKING INC | | | SCAC3 |
| 11309 | CNOD | CNAN NORD SPA | | | SCAC4 |
| 11310 | CNOE | CONDOR ENTERPRISES, INC | | | SCAC3 |
| 11311 | CNOE | CONDOR ENTERPRISES INC | | | SCAC4 |
| 11312 | CNOG | CANOGA TRANSPORTATION CO INC | | | SCAC3 |
| 11313 | CNOG | CASINO NIAGARA | | | SCAC4 |
| 11314 | CNOH | CANOOCHEE TRANSPORT INC | | | SCAC4 |
| 11315 | CNOI | CRONIN OIL INC | | | SCAC3 |
| 11316 | CNOI | COURIER NOW | | | SCAC4 |
| 11317 | CNOJ | CANSCO LTD | | | SCAC4 |
| 11318 | CNOK | CASTANEDA, GONZALO | | | SCAC3 |
| 11319 | CNOK | CHINOOK TRANSPORTATION SERVICES LLC | | | SCAC4 |
| 11320 | CNOL | COLONIAL TRANSIT INC | | | SCAC3 |
| 11321 | CNOM | CONNORS TRUCKING INC | | | SCAC3 |
| 11322 | CNOO | C & N TRANSPORTATION CORPORATION | | | SCAC3 |
| 11323 | CNOO | CANTOR LOGISTICS INC | | | SCAC4 |
| 11324 | CNOP | CONSOCOMP LTD | | | SCAC3 |
| 11325 | CNOP | COIN CO INTERNATIONAL PLC | | | SCAC4 |
| 11326 | CNOQ | C & O DELIVERY SERVICE | | | SCAC3 |
| 11327 | CNOQ | COMANORTE | | | SCAC4 |
| 11328 | CNOR | Cincinnati Northern | 1/1975-7/2005 | | NAKINA |
| 11329 | CNOR | *CANADIAN NATIONAL [CANADIAN NORTHERN RWY.] | | | PWRC |
| 11330 | CNOR | +CINCINNATI NORTHERN RR [CONRAIL] | | | PWRC |
| 11331 | CNOR | Cincinnati Northern | | | RSRV |
| 11332 | CNOR | CINCINNATI NORTHERN | | | SCAC3 |
| 11333 | CNOR | Cincinnati Northern Railway | Real: NOR | USA | TRAFFIC |
| 11334 | CNOT | CANO LOGISTICS | | | SCAC4 |
| 11335 | CNOU | CONCORD/NOPAL | | | SCAC3 |
| 11336 | CNOV | CONTAINER OVERSEAS AGENCY & TERMINA | | | SCAC3 |
| 11337 | CNOW | Columbia & Northern Ry. Co. | 7/2000-7/2005 | | NAKINA |
| 11338 | CNOW | Columbia & Northern Ry. Co. | Jul-00 | | NRHS |
| 11339 | CNOW | COLUMBIA & NORTHERN RAILWAY | | | PWRC |
| 11340 | CNOW | Columbia and Northern Railway | | | RSRV |
| 11341 | CNOW | COLUMBIA & NORTHERN RAILWAY CO | | | SCAC4 |
| 11342 | CNOX | Shell Canada Ltd. | added 10/1963; 7/1965-1/1980; eliminated 10/1987 | | NAKINA |
| 11343 | CNOX | Canadian Oil Cos. Ltd. | 7/1935-4/1961; eliminated 10/1963 | | NAKINA |
| 11344 | CNOX | Canadian Oil Cos. Ltd. | 4/38-4/61 | | NRHS |
| 11345 | CNOX | Shell Canada Ltd. | 7/65-1/80; eliminated 10/87 | | NRHS |
| 11346 | CNOX | SHELL CANADA LTD. [CANADIAN OIL CO. LTD.] | | | PWRC |
| 11347 | CNOX | Canadian Oil Co. (Shell Canada) | | | RSRV |
| 11348 | CNOY | C & O TRUCKING | | | SCAC3 |
| 11349 | CNOY | CORNELL ONLINE LLC | | | SCAC4 |
| 11350 | CNP | Centennial Air, Inc. | Callsign: Ceres, | RP | AVCODES |
| 11351 | CNP | Private Air Inc. | Callsign: Cargo North, Name changed to Levaero Aviation Inc. | CDN | AVCODES |
| 11352 | CNP | Levaero Aviation Inc. | Callsign: Cargo North, Name changed from Private Air Inc. | CDN | AVCODES |
| 11353 | CNPA | C N C TRANSPORTATION L L C | | | SCAC4 |
| 11354 | CNPB | C N GROUP INC | | | SCAC4 |
| 11355 | CNPC | C & P CORPORATION | | | SCAC3 |
| 11356 | CNPC | CAROLINA TRANSPORTATION INC | | | SCAC4 |
| 11357 | CNPD | CANFIELD PRODUCTS CORP | | | SCAC3 |
| 11358 | CNPD | CASEROS NAVIGATION PTE LTD SINGAPOR | | | SCAC4 |
| 11359 | CNPE | CONTAINER PIER CORP | | | SCAC3 |
| 11360 | CNPE | CONDOR EXPRESS | | | SCAC4 |
| 11361 | CNPF | CONCEPT FREIGHT SERVICE, INC. | | | SCAC3 |
| 11362 | CNPF | CONCEPT FREIGHT INC | | | SCAC4 |
| 11363 | CNPG | C & P TRUCKING | | | SCAC3 |
| 11364 | CNPG | CONTINENTAL PAVING INC | | | SCAC4 |
| 11365 | CNPH | CANT PRODUCTS INC | | | SCAC3 |
| 11366 | CNPH | CANADIAN PACIFIC RAILWAY & D & H LI | | | SCAC4 |
| 11367 | CNPK | CANPOL TRUCKING LTD | | | SCAC4 |
| 11368 | CNPL | CONTAINERS POOL | | | SCAC3 |
| 11369 | CNPM | C & P MOTOR SERVICE INC | | | SCAC3 |
| 11370 | CNPN | C & P TRUCKING COMPANY INC | | | SCAC3 |
| 11371 | CNPN | CANNON EXPRESS INC | | | SCAC4 |
| 11372 | CNPO | CONTAINER TRANSPORTATION CORPORATIO | | | SCAC3 |
| 11373 | CNPO | CENTURION POULTRY INC | | | SCAC4 |
| 11374 | CNPP | CENTRAL PLAINS TRANSPORT | | | SCAC3 |
| 11375 | CNPP | CENTRAL PACIFIC EXPRESS INC | | | SCAC4 |
| 11376 | CNPQ | COMMERCIAL & PACKAGE DELIVERY | | | SCAC3 |
| 11377 | CNPQ | CONCEPT PLASTICS LTD | | | SCAC4 |
| 11378 | CNPS | CONOCOPHILLIPS COMPANY | | | SCAC4 |
| 11379 | CNPT | C & P TOWING INC | | | SCAC3 |
| 11380 | CNPU | CANADIAN NATIONAL RWY | | | PWRC |
| 11381 | CNPU | Canadian National Railway | | | RSRV |
| 11382 | CNPU | CANADIAN NATIONAL | | | SCAC3 |
| 11383 | CNPU | CANADIAN NATIONAL | | | SCAC4 |
| 11384 | CNPV | CONNECT MOTORSPORTS LLC | | | SCAC4 |
| 11385 | CNPX | Canadian International Paper Co. | 7/1937-1/1941 | | NAKINA |
| 11386 | CNPX | Canadian International Paper Co. | Apr-38 | | NRHS |
| 11387 | CNPX | CANADIAN INTERNATIONAL PAPER CO. | | | PWRC |
| 11388 | CNPY | CROSS ENTERPRISES INC | | | SCAC4 |
| 11389 | CNPZ | CANADIAN NATIONAL RWY | | | PWRC |
| 11390 | CNPZ | Canadian National Railway | | | RSRV |
| 11391 | CNPZ | CANADIAN NATIONAL RAILWAYS | | | SCAC4 |
| 11392 | CNQ | Canadian National Rys. | 1/1994-7/2005 | | NAKINA |
| 11393 | CNQ | Canadian Northern Quebec Ry. (Canadian National Rys.) | 8/1920-7/1923 | | NAKINA |
| 11394 | CNQ | Canadian Northern Quebec Ry. (Canadian National Rys.) | 23-Jul | | NRHS |
| 11395 | CNQ | Canadian National Rys. | 1/94-7/2000 | | NRHS |
| 11396 | CNQ | CANADIAN NATIONAL RWY [CANADIAN NORTHERN QUEBEC RWY.] | | | PWRC |
| 11397 | CNQ | Canadian National Railway | | | RSRV |
| 11398 | CNQC | CONQUER CARTAGE INC | | | SCAC3 |
| 11399 | CNQC | CORCORAN LOGISTICS LLC | | | SCAC4 |
| 11400 | CNQE | C & O ENTERPRISES | | | SCAC3 |
