| 1 | GRF | Aerogryf Ltd. | Callsign: Aerogryf, | PL | AVCODES |
| 2 | GRF | Gryphon Airlines SA (Pty) Ltd | IATA: Y3, Callsign: Simba, Designator Y3 recalled by IATA. | ZA | AVCODES |
| 3 | GRF | Gryphon Airlines SA (Pty) Ltd | Callsign: Simba, Designator Y3 recalled by IATA. | ZA | AVCODES |
| 4 | GRFA | GERICO FOREST PRODUCTS LTD | | | SCAC4 |
| 5 | GRFB | G T B TRUCKING INC | | | SCAC4 |
| 6 | GRFC | GRIFFITH ENERGY SERVICES INC | | | SCAC4 |
| 7 | GRFF | Georgia & Florida R.R. Co., Inc. | 7/2000-7/2005 | | NAKINA |
| 8 | GRFF | Georgia & Florida R.R. Co., Inc. | Jul-00 | | NRHS |
| 9 | GRFF | GEORGIA & FLORIDA RAILROAD CO., INC. | | | PWRC |
| 10 | GRFF | Georgia and Florida Railroad | | | RSRV |
| 11 | GRFH | GREGORY TRUCK BROKERAGE LLC | | | SCAC4 |
| 12 | GRFI | GRIFFIN BEVERAGE COMPANY | | | SCAC4 |
| 13 | GRFL | GRIFFITH ENERGY | | | SCAC4 |
| 14 | GRFN | GRIFFIN ENTERPRISES LLC | | | SCAC4 |
| 15 | GRFS | GUTIERREZ REFRIGUERADOS | | | SCAC4 |
| 16 | GRFU | GATEWAY RAIL FREIGHT LIMITED | | IND | BIC |
| 17 | GRFU | GATEWAY RAIL FREIGHT LIMITED | | | SCAC4 |
| 18 | GRFV | GARCIA FLORES, EDGAR | | | SCAC4 |
| 19 | GRFZ | GRAND FORK MILLING | | | PWRC |
