| 1 | CPI | CEBU Pacific Air | IATA: 5J, Callsign: Cebu Air, IATA Prefix: 203, ICAO designator changed to CEB | RP | AVCODES |
| 2 | CPI | CAI | | | ICAO1 |
| 3 | CPI | Canadian Pacific Ry. Co. | added 1/1997; 7/2000-7/2005 | | NAKINA |
| 4 | CPI | CP Rail | 1/1975-1/1994 | | NAKINA |
| 5 | CPI | CP Rail System | eliminated 1/1997 | | NAKINA |
| 6 | CPI | CP Rail | 1/75-1/94 | | NRHS |
| 7 | CPI | CP Rail System | eliminated 1/97 | | NRHS |
| 8 | CPI | Canadian Pacific Ry. Co. | added 1/97; 7/2000 | | NRHS |
| 9 | CPI | CP RAIL [CANADIAN PACIFIC RWY.] | | | PWRC |
| 10 | CPI | Canadian Pacific Railway | | | RSRV |
| 11 | CPIB | CUSTOM PAK INC | | | SCAC4 |
| 12 | CPIC | CROWN POINT IRON COMPANY RR | | | PWRC |
| 13 | CPIC | CAPITAL TOURS INC | | | SCAC3 |
| 14 | CPID | CENTER PLAINS INDUSTRIES INC | | | SCAC3 |
| 15 | CPID | CAPITAL I INDUSTRIES INC | | | SCAC4 |
| 16 | CPIH | CHAPIN TRUCKING | | | SCAC3 |
| 17 | CPIH | CHEMCORP INDUSTRIES INC | | | SCAC4 |
| 18 | CPII | CAPITOL TRUCKING INC | | | SCAC3 |
| 19 | CPIJ | CAPITAL TRANSPORTATION | | | SCAC3 |
| 20 | CPIK | CPI TRUCKING CO INC | | | SCAC4 |
| 21 | CPIM | COMPUTER IDENTICS CORP | | | SCAC3 |
| 22 | CPIN | COMPTROL INC | | | SCAC3 |
| 23 | CPIO | CAPITAL MARINE | | | SCAC3 |
| 24 | CPIO | CORREA PALLET INC | | | SCAC4 |
| 25 | CPIP | CARIPAC INTERNATIONAL INC | | | SCAC3 |
| 26 | CPIP | CARE PRODUCTS INC | | | SCAC4 |
| 27 | CPIQ | CHAMPION TRANSPORTATION INC | | | SCAC3 |
| 28 | CPIQ | COLTER & PETERSON INC | | | SCAC4 |
| 29 | CPIR | CAPRI TRANSPORT LTEE | | | SCAC3 |
| 30 | CPIR | CAPITAL IRON (1997) LTD | | | SCAC4 |
| 31 | CPIT | CAPITAL MESSENGERS INC | | | SCAC3 |
| 32 | CPIT | CAN PRO INDEPENDENT TRANSPORT LTD | | | SCAC4 |
| 33 | CPIU | CONTAINER PROVIDERS DMCC | | UAE | BIC |
| 34 | CPIU | CONTAINER PROVIDERS INTERNATIONAL | | | SCAC4 |
| 35 | CPIV | C P I TRUCKING INC | | | SCAC3 |
| 36 | CPIX | ICI Acrylics Inc. | added 1/1993; 1/1994; eliminated 10/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 37 | CPIX | Continental Polymers Inc. | added 7/1981; eliminated 1/1993 | | NAKINA |
| 38 | CPIX | Cominco Products Inc. | added 4/1956; 10/1957-7/1965; eliminated 4/1966 | | NAKINA |
| 39 | CPIX | Cominco Products Inc. | 10/57-7/65; eliminated 4/66 | | NRHS |
| 40 | CPIX | Continental Polymers Inc. | added 7/81; eliminated 1/93 | | NRHS |
| 41 | CPIX | ICI Acrylics Inc. | added 1/93; 1/94; eliminated 10/97; 7/2000 | | NRHS |
| 42 | CPIX | *COMINCO PRODUCTS INC. | | | PWRC |
| 43 | CPIX | +ICI ACRYLICS, INC. [CONTINENTAL POLYMERS INC.] | | | PWRC |
| 44 | CPIX | Continental Polymers (ICI Acrylics) | | | RSRV |
| 45 | CPIX | COMINCO PRODUCTS INC | | | SCAC3 |
| 46 | CPIX | ICI ACRYLICS INC | | | SCAC4 |
| 47 | CPIY | CAPITOL TRANSPORT INC | | | SCAC3 |
| 48 | CPIY | CAPITOL TRANSPORT INC | | | SCAC4 |
