| 1 | RLK | Air Nelson Ltd. | Callsign: Link, | NZ | AVCODES |
| 2 | RLK | Air Nelson | | | ICAO1 |
| 3 | RLK | RaiLink Canada Ltd, d/b/a RaiLink Ottawa Valley | added 7/1998; 7/2000; eliminated 1/2003; 7/2005 | | NAKINA |
| 4 | RLK | RaiLink Canada Ltd, d/b/a RaiLink Ottawa Valley | added 7/98; 7/2000 | | NRHS |
| 5 | RLK | RAILINK CANADA LIMITED d/b/a RAILINK OTTAWA VALLEY | | | PWRC |
| 6 | RLK | Rail Link | | | RSRV |
| 7 | RLK | RAILINK OTTAWA VALLEY | | | SCAC4 |
| 8 | RLKC | ROCK LAKE CUSTOM SERVICES LLC | | | SCAC4 |
| 9 | RLKF | RLK TRANSFER INC | | | SCAC3 |
| 10 | RLKG | R L TRUCKING INC | | | SCAC3 |
| 11 | RLKG | RECOL TRUCKING INC | | | SCAC4 |
| 12 | RLKI | R L K INC | | | SCAC3 |
| 13 | RLKI | R & L TRUCKING LLC | | | SCAC4 |
| 14 | RLKL | ROADLINK TRANSPORTATION SOLUTIONS | | | SCAC4 |
| 15 | RLKO | RAINY LAKE OIL | | | SCAC4 |
| 16 | RLKP | RUNA LINK CORP | | | SCAC4 |
| 17 | RLKQ | RICHMOND LINK & SONS | | | SCAC3 |
| 18 | RLKX | R.L. and S.S. Klein | added 4/1984; eliminated 4/1985 | | NAKINA |
| 19 | RLKX | Delta Tank Line Co. | added 1/1984; eliminated 4/1984 | | NAKINA |
| 20 | RLKX | R.L. and S.S. Klein | added 4/84; eliminated 4/85 | | NRHS |
| 21 | RLKX | Delta Tank Line Co. | eliminated 4/84 | | NRHS |
| 22 | RLKX | R. L. & S. S. KLEIN | | | PWRC |
| 23 | RLKX | R. L. and S. S. Klein | | | RSRV |
