| 1 | DOR | Dornier Luftfahrt GmbH | Callsign: Dornier, Merged in EADS in 2002. Name change from Dornier Reparatuirwerft GmbH | D | AVCODES |
| 2 | DOR | Dornier Reparatuirwerft GmbH | Callsign: Dornier, Name change to Dornier Luftfahrt GmbH | D | AVCODES |
| 3 | DOR | Dornier GmbH | Callsign: Dornier, Name change to Dornier Reparatuirwerft GmbH | D | AVCODES |
| 4 | DOR | General Atomics Aerotec Systems GmbH | Callsign: Dornier, | D | AVCODES |
| 5 | DOR | Dornier | | | ICAO1 |
| 6 | DORA | DORADOS TRUCKING | | | SCAC4 |
| 7 | DORB | DORMAN BROTHERS LLC | | | SCAC4 |
| 8 | DORH | DEB-ORAH TRANSPORT | | | SCAC4 |
| 9 | DORI | Dori Trans SRL Roman | | RO | TRAFFIC |
| 10 | DORL | DORAN ENTERPRISES INC | | | SCAC4 |
| 11 | DORN | DORNS TRANSPORTATION INC | | | PWRC |
| 12 | DORR | DORE TRANSPORT | | | SCAC4 |
| 13 | DORS | DORSEY, J M INC | | | SCAC4 |
| 14 | DORU | DORICK NAVIGATION S A | | | SCAC4 |
| 15 | DORV | DORVAL CORP | | | SCAC4 |
| 16 | DORX | Dallas Oil & Refining Co. | 7/1935-4/1938 | | NAKINA |
| 17 | DORX | Dallas Oil & Refining Co. | Apr-38 | | NRHS |
| 18 | DORX | DALLAS OIL & REFINING CO. | | | PWRC |
