| 1 | HAY | Hamburg Airways Luftverkehrsgesellschaft mbH | IATA: HK, Callsign: Hamburg Airways, | D | AVCODES |
| 2 | HAY | Haya Aviation Services Company Limited | Callsign: Haya, | SA | AVCODES |
| 3 | HAY | Hamburg Airways | | D | TRAFFIC |
| 4 | HAYB | HAY BROTHERS INC | | | SCAC4 |
| 5 | HAYC | HAYES TRUCKING | | | SCAC4 |
| 6 | HAYD | HAYDAY FARMS INC | | | SCAC4 |
| 7 | HAYF | HAY FARMS | | | SCAC4 |
| 8 | HAYG | HAYHURST TRANSPORT | | | SCAC4 |
| 9 | HAYH | HAYNES FURNITURE COMPANY INC | | | SCAC4 |
| 10 | HAYL | HAYLES TRUCKING | | | SCAC4 |
| 11 | HAYN | HAYNES MOTOR LINES LLC | | | SCAC4 |
| 12 | HAYO | HAYWOOD TRUCKING & WAREHOUSING INC | | | SCAC4 |
| 13 | HAYQ | HAYTER DRILLING LTD | | | SCAC4 |
| 14 | HAYR | HAY RAY | | | SCAC4 |
| 15 | HAYS | HAYES BROS TRUCKING INC | | | SCAC4 |
| 16 | HAYT | HAYES LOGISTICS INC | | | SCAC4 |
| 17 | HAYU | SUPER HAYS MARINE SHIPPING L.L.C | | UAE | BIC |
| 18 | HAYV | HLI ENTERPRISES LLC | | | SCAC4 |
| 19 | HAYW | HAYWARD LOGISTICS | | | SCAC4 |
