| 1 | WLR | Wallisair | Callsign: Walisair, | F | AVCODES |
| 2 | WLR | Air Walser S.r.l. | Callsign: Airwalser, | I | AVCODES |
| 3 | WLR | Air Walser | | | ICAO1 |
| 4 | WLR | Wabush Lake Railway | | USA | TRAFFIC |
| 5 | WLRF | WHEELER FREIGHTWAYS | | | SCAC1 |
| 6 | WLRF | WHEELER FREIGHTWAYS | | | SCAC4 |
| 7 | WLRL | WASHINGTON-LINCOLN RAILINK | | | PWRC |
| 8 | WLRL | Washington-Lincoln Railink | | | RSRV |
| 9 | WLRN | WILL TRANSPORT INC | | | SCAC4 |
| 10 | WLRP | WILSONART INTERNATIONAL INC | | | SCAC4 |
| 11 | WLRT | WILLTRAN INC | | | SCAC4 |
