| 1 | DRD | Dardanel Air Havacilik Ve Sanayi Ticaret A.S. | Callsign: Dardanel, | TR | AVCODES |
| 2 | DRD | Air Madrid Lineas Aereas, S.A. | IATA: NM, Callsign: Alada Air, IATA Prefix: 476, Ceased operations on 15 December 2006. ICAO designator changed from DRI | E | AVCODES |
| 3 | DRD | Air Madrid | IATA: NM | | ICAO1 |
| 4 | DRDA | DAFOE, D & R HOLDINGS LTD | | | SCAC4 |
| 5 | DRDH | DECKS RAILINGS & DESIGN | | | SCAC4 |
| 6 | DRDI | DRIVER DIRECT 1998 LIMITED | | | SCAC4 |
| 7 | DRDJ | DOLE ROAD CARRIERS | | | SCAC4 |
| 8 | DRDK | DESANTIS, D R TRUCKING | | | SCAC4 |
| 9 | DRDL | DIRECT DELIVERY AND DISTRIBUTION, INC | | | SCAC1 |
| 10 | DRDL | DIRECT DELIVERY AND DISTRIBUTION IN | | | SCAC4 |
| 11 | DRDN | DRD INTERNATIONAL INC | | | SCAC4 |
| 12 | DRDQ | DEFENCE RESEARCH & DEVELOPMENT (AWA | | | SCAC4 |
| 13 | DRDS | DEBRON DISTRIBUTION SERVICES INC | | | SCAC4 |
| 14 | DRDT | DESROCHE, D TRUCKING INC | | | SCAC4 |
| 15 | DRDV | DRW DE DEL RIO CD ACUNA SA DE CV | | | SCAC4 |
| 16 | DRDW | RAY, DON, DRIVE-A-WAY COMPANY OF CALIFORNIA, INC | | | SCAC3 |
| 17 | DRDX | The Duredo Co. | added 7/1979; 1/1980; eliminated 4/1986 | | NAKINA |
| 18 | DRDX | Duredo Co. (John H. Grace Co.) | 1/1950-1/1975; eliminated 7/1979 | | NAKINA |
| 19 | DRDX | Duredo Co., care of John H. Grace Co. | 4/1947 | | NAKINA |
| 20 | DRDX | Detroit Reduction Co. | 7/1935-4/1938 | | NAKINA |
| 21 | DRDX | Detroit Reduction Co. | Apr-38 | | NRHS |
| 22 | DRDX | Duredo Co. (John H. Grace Co.) | 1/52-1/75; eliminated 7/79 | | NRHS |
| 23 | DRDX | The Duredo Co. | added 7/79; 1/80; eliminated 4/86 | | NRHS |
| 24 | DRDX | *DETROIT REDUCTION CO. | | | PWRC |
| 25 | DRDX | *DUREDO COMPANY (JOHN H. GRACE CO.) | | | PWRC |
| 26 | DRDX | The Duredo | | | RSRV |
| 27 | DRDX | THE DUREDO COMPANY | | | SCAC4 |
| 28 | DRDY | DARBY, PETER | | | SCAC4 |
