| 1 | ASK | Air Sask Aviation 1991 | IATA: 7W, Callsign: Air Sask, Merged with Athabaska Airways to from Transwest Air 09/2000. Designator 7W recalled by IATA | CDN | AVCODES |
| 2 | ASK | Aero Sky S.L. | Callsign: Multisky, | E | AVCODES |
| 3 | ASK | La Ronge Aviation Services | | | ICAO1 |
| 4 | ASK | ARMCO STEEL (KENTUCKY) | | | PWRC |
| 5 | ASKA | ALASKA FRESH XPRESS INC | | | SCAC4 |
| 6 | ASKA | Auto-Verkehr Spiez - Kräatigen - Aeschi | | CH | TRAFFIC |
| 7 | ASKAZ | Aska Żory | | PL | TRAFFIC |
| 8 | ASKC | ASSURED CARRIERS INC | | | SCAC3 |
| 9 | ASKC | ALANIS INTERNATIONAL TRANSPORT LLC | | | SCAC4 |
| 10 | ASKD | ASK MARINE INC | | | SCAC4 |
| 11 | ASKF | A & S TRUCKING INC | | | SCAC4 |
| 12 | ASKG | ASTA TRUCKING CORPORATION | | | SCAC3 |
| 13 | ASKG | AST NYC | | | SCAC4 |
| 14 | ASKH | ASKIN TRUCKING INC | | | SCAC3 |
| 15 | ASKH | ASPHALT EXPRESS ENTERPRISES LLC | | | SCAC4 |
| 16 | ASKI | ALPINE SKI TOURS INC | | | SCAC3 |
| 17 | ASKK | A S K TRUCKING | | | SCAC4 |
| 18 | ASKM | ASKINS MOVING & STORAGE INC | | | SCAC3 |
| 19 | ASKN | ASKINS TRUCKING COMPANY | | | SCAC3 |
| 20 | ASKO | ASLAKSON, TERRANCE PAUL | | | SCAC3 |
| 21 | ASKO | A & S TRUCKING CO | | | SCAC4 |
| 22 | ASKP | A S A P PLUS INC | | | SCAC4 |
| 23 | ASKR | ASKRA MARITIME CO LTD | | | SCAC4 |
| 24 | ASKT | ASK TRAILER TRANSPORTERS | | | SCAC3 |
| 25 | ASKU | ANGLO SAXON CONTAINER | | | SCAC3 |
| 26 | ASKV | A S K DIST | | | SCAC4 |
| 27 | ASKW | A & S TRUCKING COMPANY | | | SCAC4 |
| 28 | ASKX | American Solvents & Chemical Corp. | 7/1930-7/1932 | | NAKINA |
| 29 | ASKX | *AMERICAN SOLVENTS & CHEMICAL CORP. | | | PWRC |
| 30 | ASKX | *ASROCK | | | PWRC |
