| DAE | D5 | 992 | DHL Aero Express |
| DAH | AH | 124 | Air Algerie |
| DAL | DL | 006 | Delta Air Lines |
| DAM | D2 | 059 | Skyline NEPC |
| DAN | DM | 349 | Maersk Air Cargo |
| DAO | D3 | 991 | Daallo Airlines |
| DAP | Aerovias DAP | ||
| DAT | SN | 082 | Brussels Cargo |
| DBD | DB | Air Niagara Express | |
| DCA | Dacono Air | ||
| DCC | DC | Caribbean Air Cargo | |
| DCE | K8 | 559 | Dutch Caribbean Airlines |
| DDD | ZD | AirNet 21 JSC | |
| DEB | 2G | Debonair Airways | |
| DER | DF | 898 | Deer Jet |
| DGX | Digex Aero Cargo | ||
| DHI | KI | Adam Air | |
| DHK | D0 | DHL Air | |
| DHL | ER | 423 | ASTAR Air Cargo |
| DHV | DHL Aviation | ||
| DHX | ES | 155 | DHL/SNAS |
| DIR | AW | Dirgantara Air Service | |
| DJA | HO | 394 | Antinea Airlines |
| DJB | D8 | Djibouti Airlines | |
| DKH | HO | Juneyao Airlines | |
| DKN | DN | Deccan | |
| DKR | WC | Teranca | |
| DLA | EN | 101 | Air Dolomiti SPA |
| DLH | LH | 220 | Lufthansa |
| DMO | E3 | 497 | Domodedovo Airlines |
| DNE | Dnepr-air | ||
| DNM | 3D | 490 | Denim Air |
| DNV | D9 | 733 | Aeroflot-Don |
| DOA | DO | 113 | Dominicana de Aviacion |
| DOB | Dobrolet Airlines of Moscow | ||
| DQA | Q2 | Island Aviation Services | |
| DRI | NM | Air Madrid | |
| DRK | KB | 787 | Druk Air |
| DRU | Mirni Air Enterprise | ||
| DRX | Des R. Cargo Express | ||
| DRY | Deraya Air Service | ||
| DSL | D8 | 213 | Diamond Sakha Airlines |
| DSQ | Dasab Airlines | ||
| DSR | WD | 761 | DAS Air Cargo |
| DTA | DT | 118 | TAAG Angola Airlines |
| DTH | SF | 515 | Tassili Airlines |
| DTR | DX | Danish Air Transport | |
| DVN | Dvin Avia | ||
| DVU | NQ | 819 | Orbi Georgian Airlines |
| DXH | 8C | East Star Airlines | |
| DYA | DY | Alyemen Airlines |