| 1 | GUN | Grant Aviation, Inc. | IATA: GV, Designator GS* reinstated/changed by IATA | USA | AVCODES |
| 2 | GUN | Grant Aviation | IATA: GS | | ICAO1 |
| 3 | GUNB | GUNDLACH & SONS LEASING COMPANY INC | | | SCAC4 |
| 4 | GUND | GUNN, CLAUDE R | | | SCAC4 |
| 5 | GUNE | GUNTREN EXPRESS INC | | | SCAC4 |
| 6 | GUNG | GUNGEN DENIZCILIK VE TICARET A S | | | SCAC4 |
| 7 | GUNH | GUNTHERS TRANSPORT | | | SCAC4 |
| 8 | GUNI | GUNDI INC | | | SCAC4 |
| 9 | GUNN | GUNSON, R TRUCKING | | | SCAC4 |
| 10 | GUNS | GUNSON TRANSPORT | | | SCAC4 |
