| 1 | GRY | New York State Police | Callsign: Gray Rider, | USA | AVCODES |
| 2 | GRY | New York State Police | | | ICAO1 |
| 3 | GRYC | GRAYPORT TRANSFER & STORAGE | | | SCAC4 |
| 4 | GRYE | GRAY, E G TRANSPORTATION LTD | | | SCAC4 |
| 5 | GRYF | Przewozy Autobusowe Gryf | | PL | TRAFFIC |
| 6 | GRYFK | Przewozy Autobusowe Gryf sp. z o.o. | | PL | TRAFFIC |
| 7 | GRYGLAS | Auto-Szkola Gryglas | | PL | TRAFFIC |
| 8 | GRYJ | GRAY, JACK TRANSPORT INC | | | SCAC4 |
| 9 | GRYM | GEORGIA RECYCLERS LLC | | | SCAC4 |
| 10 | GRYO | GRAY TRANSPORTAITON INC | | | SCAC4 |
| 11 | GRYQ | GRAY LINE CARGO | | | SCAC4 |
| 12 | GRYR | Grenada Railway | | | RSRV |
| 13 | GRYR | GRANADA RAILWAY LLC | | | SCAC4 |
| 14 | GRYS | GRAYS, ROBERT SONS INC | | | SCAC4 |
| 15 | GRYT | GRAY TRANSPORT | | | SCAC4 |
| 16 | GRYV | GARRETT RECYCLING INC | | | SCAC4 |
| 17 | GRYX | TransMatrix, Inc. | added 4/2002; eliminated 1/2004; 7/2005 (not listed) | | NAKINA |
| 18 | GRYX | John H. Grace Co. | 7/1935; 1/1941-7/2000; eliminated 4/2002 | | NAKINA |
| 19 | GRYX | John H. Grace | 7/1930-7/1932; 7/1937-4/1938 | | NAKINA |
| 20 | GRYX | John H. Grace Co. | 4/38-7/2000 | | NRHS |
| 21 | GRYX | TRANSMATRIX, INC. (JOHN H. GRACE CO.) | | | PWRC |
| 22 | GRYX | John H. Grace (Transmatrix) | | | RSRV |
| 23 | GRYX | TRANSMATRIX INC | | | SCAC4 |
| 24 | GRYY | G R Y N | | | SCAC4 |
