| 1 | DEN | Denel Aviation | Callsign: Denel, | ZA | AVCODES |
| 2 | DEN | Danair A/S | IATA: DX, Callsign: Danish, | DK | AVCODES |
| 3 | DEN | SAS Danmark A/S | | DK | AVCODES |
| 4 | DEN | Dampfeisenbahn Niedehein e.V. | | DE | VKM |
| 5 | DENA | DENALI INTERNATIONAL | | | SCAC4 |
| 6 | DENC | DEPAOLO ENTERPRISE INC | | | SCAC4 |
| 7 | DEND | DENMARK TRANSPORT LTD | | | SCAC4 |
| 8 | DENE | DESIGNS 90S | | | SCAC4 |
| 9 | DENH | DOORE ENERGY INC | | | SCAC4 |
| 10 | DENI | DENIZ NAKLIYATI T A S | | | SCAC4 |
| 11 | DENL | DEN-LYN TRUCKING LTD | | | SCAC4 |
| 12 | DENM | DENMARK EXPRESS INC | | | SCAC4 |
| 13 | DENN | DENNIS TRUCK LINES INC | | | SCAC4 |
| 14 | DENO | DENOMME, PAUL | | | SCAC4 |
| 15 | DENQ | DENTON TRANSPORTATION INC | | | SCAC4 |
| 16 | DENT | DENNIS TRUCK LINE INC | | | PWRC |
| 17 | DENT | DENT TRUCK LINES INC | | | SCAC4 |
| 18 | DENU | HARDING CONTAINERS INTERNATIONAL INC. | | USA | BIC |
| 19 | DENV | DAMPIER ENTERPRISES | | | SCAC4 |
| 20 | DENW | DEVASH ENTERPRISE | | | SCAC4 |
