| 1 | WRR | WRA, Inc. | Callsign: Wrap Air, | USA | AVCODES |
| 2 | WRR | WRA Inc | | | ICAO1 |
| 3 | WRR | Western Railroad Company | Real: WRRC | USA | TRAFFIC |
| 4 | WRRC | Western Rail Road Co. | added 1/1976; 1/1980-7/2005 | | NAKINA |
| 5 | WRRC | Western Rail Road Co. | 1/80-7/2000 | | NRHS |
| 6 | WRRC | WESTERN RAIL ROAD CO. | | | PWRC |
| 7 | WRRC | Western Railroad | | | RSRV |
| 8 | WRRC | WESTERN RAILROAD COMPANY | | | SCAC4 |
| 9 | WRRE | WARRIOR ENERGY | | | SCAC4 |
| 10 | WRRG | WARD RUGH INC | | | SCAC4 |
| 11 | WRRI | WERNER LLC | | | SCAC4 |
| 12 | WRRL | WARRACK BROS TRUCKING LTD | | | SCAC4 |
| 13 | WRRS | WORLD RESOURCE RECOVERY SYSTEMS INC | | | SCAC4 |
| 14 | WRRT | WARREN TRANSPORT INC | | | SCAC4 |
| 15 | WRRX | Walden's Ridge R.R. Co. | added 1/2004; eliminated 7/2004; 7/2005 (not listed) | | NAKINA |
| 16 | WRRX | *SOUTHEASTERN INTERNATIONAL RAILROAD | | | PWRC |
| 17 | WRRX | +WALDEN'S RIDGE RAILROAD CO. | | | PWRC |
| 18 | WRRX | WALDENS RIDGE RAILROAD COMPANY INC | | | SCAC4 |
