| 1 | PLR | Northwestern Air Lease Ltd. | IATA: J3, Callsign: Polaris, IATA Desigantor changed form CT* | CDN | AVCODES |
| 2 | PLR | Northwestern Air Lease Ltd. | IATA: CT, Callsign: Polaris, IATA Desigantor changed to J3 | CDN | AVCODES |
| 3 | PLR | Polar Airways Ltd. | Callsign: Polar, | GB | AVCODES |
| 4 | PLR | Northwestern Air | IATA: J3 | | ICAO1 |
| 5 | PLRC | POLAR CORP | | | SCAC3 |
| 6 | PLRD | PELLETIER, RICHARD TRANSIT INC | | | SCAC3 |
| 7 | PLRH | PELT, RALPH TRUCKING INC | | | SCAC3 |
| 8 | PLRI | PLR TRANSPORT INC | | | SCAC3 |
| 9 | PLRI | POLARIS INFLATABLE BOATS (CANADA) L | | | SCAC4 |
| 10 | PLRK | PLYMOUTH ROCK TRANSP CORP | | | PWRC |
| 11 | PLRK | PLYMOUTH ROCK TRANSPORTATION CORP | | | SCAC3 |
| 12 | PLRK | PLYMOUTH ROCK TRANSPORTATION CORP | | | SCAC4 |
| 13 | PLRL | PELLROSE TRUCKING LLC | | | SCAC4 |
| 14 | PLRM | POLARMAC | | | SCAC4 |
| 15 | PLRN | PIONEER LOGISTICS INC | | | SCAC4 |
| 16 | PLRO | PILCHER, LOREN R | | | SCAC3 |
| 17 | PLRO | PLEASANT RIVER LUMBER CO | | | SCAC4 |
| 18 | PLRP | P L R TRANSPORT INC | | | SCAC3 |
| 19 | PLRQ | PLASTOCOR INC | | | SCAC4 |
| 20 | PLRR | PLUMROSE USA INC | | | SCAC4 |
| 21 | PLRS | POLAR STEAMSHIP LINE | | | SCAC3 |
| 22 | PLRS | POLAR STEAMSHIP LINE | | | SCAC4 |
| 23 | PLRU | PIC LEASING CORPORATION | | | PWRC |
| 24 | PLRU | Pic Leasing Corporation | | | RSRV |
| 25 | PLRU | PIC LEASING CORP | | | SCAC3 |
| 26 | PLRU | PIC LEASING CORPORATION | | | SCAC4 |
| 27 | PLRX | PIC Trans, Inc. | 7/2000-7/2005 (not listed) | | NAKINA |
| 28 | PLRX | Producers Pipe Line & Refining Co. | 7/1923 | | NAKINA |
| 29 | PLRX | PIC Trans, Inc. | Jul-00 | | NRHS |
| 30 | PLRX | *PRODUCERS PIPE LINE & REFINING CO. | | | PWRC |
| 31 | PLRX | *PITTSBURG, LISBON & WESTERN RAILWAY | | | PWRC |
| 32 | PLRX | +PIC TRANS INCORPORATED | | | PWRC |
| 33 | PLRX | PIC Trans | | | RSRV |
