| 1 | WWS | Worldwide Aviation Services | | PK | AVCODES |
| 2 | WWS | Worldwide Aviation Services | | | ICAO1 |
| 3 | WWSC | WATERLOO WAREHOUSING & SERVICE CO I | | | SCAC4 |
| 4 | WWSG | WORLDWIDE SHIPPING COMPANY S A NY | | | SCAC4 |
| 5 | WWSI | WILLIAMS WRECKER SERVICE INC | | | SCAC4 |
| 6 | WWSL | WILDWOOD SHIPPING | | | SCAC4 |
| 7 | WWSP | W W TRANSPORT INC | | | SCAC4 |
| 8 | WWSU | WESTWOOD SHIPPING LINES INC | | | SCAC1 |
| 9 | WWSU | WESTWOOD SHIPPING LINES | | | SCAC4 |
| 10 | WWSW | WHITE WHALE SHIPPING LTD | | | SCAC4 |
| 11 | WWSX | Standard Car Truck Co. | added 7/1980; eliminated 1/1988 | | NAKINA |
| 12 | WWSX | Standard Car Truck Co. | added 7/80; eliminated 1/88 | | NRHS |
| 13 | WWSX | STANDARD CAR TRUCK CO. | | | PWRC |
| 14 | WWSX | Standard Car Truck Co. | | | RSRV |
| 15 | WWSY | WESTERN WHOLESALE SUPPLY INC | | | SCAC4 |
