| 2601 | DJTA | DAVIS, JARIRON TRUCKING | | | SCAC4 |
| 2602 | DJTB | DOHERTY, JAY TRUCKING | | | SCAC4 |
| 2603 | DJTH | DEAN, JAMES TRUCKING INC | | | SCAC4 |
| 2604 | DJTI | D J TRUCKING | | | SCAC4 |
| 2605 | DJTJ | D J TRUCKING CO | | | SCAC4 |
| 2606 | DJTK | DIEDRICH & J TRUCKING | | | SCAC4 |
| 2607 | DJTM | DEE JAY TRANSPORTATION INC | | | SCAC4 |
| 2608 | DJTP | DE DIOS, JUAN TRANSPORT | | | SCAC4 |
| 2609 | DJTS | D & J TRANSPORT | | | SCAC4 |
| 2610 | DJTX | The David J. Joseph Co. | added 10/2003; 7/2005 | | NAKINA |
| 2611 | DJTX | Joseph Transportation Inc. | added 4/2000; 7/2000; eliminated 10/2003 | | NAKINA |
| 2612 | DJTX | The David J. Joseph Co. | added 7/1994; eliminated 4/2000 | | NAKINA |
| 2613 | DJTX | The David J. Joseph Co. | added 7/94; eliminated 4/2000 | | NRHS |
| 2614 | DJTX | Joseph Transportation Inc. | added 4/2000; 7/2000 | | NRHS |
| 2615 | DJTX | JOSEPH TRANSPORTATION, INC. [DAVID J. JOSEPH CO.] | | | PWRC |
| 2616 | DJTX | David J. Joseph Transportation | | | RSRV |
| 2617 | DJTX | JOSEPH, DAVID J COMPANY, THE | | | SCAC4 |
| 2618 | DJTX | David J. Joseph Transportation | | USA | TRAFFIC |
| 2619 | DJU | Air Djibouti | IATA: DY, Callsign: Air Djib, Established in 1963, ceased all operations in 1991. | DJI | AVCODES |
| 2620 | DJU | Air Djibouti | | | ICAO1 |
| 2621 | DJUR | DJURIC TRUCKING INC | | | SCAC4 |
| 2622 | DJWM | DE JONG, WM ENTERPRISES INC | | | SCAC4 |
| 2623 | DJXI | D & J TRANSPORTATION INC | | | SCAC4 |
| 2624 | DJXL | D & J TRANSPORTATION LLC | | | SCAC4 |
| 2625 | DJYM | DOMPIER, JERRY M SERVICE INC | | | SCAC4 |
| 2626 | DK | Premiair A/S | ICAO: VKG, Callsign: Viking, IATA Prefix: 630, Name changed to MyTravel Airways A/S w.e.f. 01 May 2002. | DK | AVCODES |
| 2627 | DK | Eastland Air | ICAO: ELA, | AUS | AVCODES |
| 2628 | DK | Air Corse | ICAO: ARK, Callsign: Air Corse, | F | AVCODES |
| 2629 | DK | Scanair | ICAO: VKG, Callsign: Sunjet, Founded in 1961. Merged with Conair of Scandinavia to from Premiair A/S 0n 01 January 1994. | DK | AVCODES |
| 2630 | DK | MyTravel Airways A/S | ICAO: VKG, Callsign: Viking, IATA Prefix: 630, Name changed to Thomas Cook Airlines Scandinavia A/S. Name changed from Premiair A/S on 01 May 2002. | DK | AVCODES |
| 2631 | DK | Thomas Cook Airlines Scandinavia A/S | ICAO: VKG, Callsign: Viking, IATA Prefix: 630, Name changed to SunClass Airlines A/S w.e.f 30 October 2019. Name changed from MyTravel Airways A/S. Name changed from Premiair A/S 01 May 2002. | DK | AVCODES |
| 2632 | DK | SunClass Airlines ApS | ICAO: VKG, Callsign: Viking, IATA Prefix: 630, Name changed from Thomas Cook Airlines Scandinavia A/S w.e.f. 30 October 2019 and previously from MyTravel Airways A/S. Name changed from Premiair A/S 01 May 2002. | DK | AVCODES |
| 2633 | DK | Dampfbahnfreunde Kahlgrund e.V. | Hanau | D | privat-bahn.de |
| 2634 | DK&W | DeKalb & Western R.R. Co. | 7/1923-7/1936 | | NAKINA |
| 2635 | DK&W | DeKalb & Western R.R. Co. | 23-Jul | | NRHS |
| 2636 | DK&W | DEKALB & WESTERN RAILROAD CO. | | | PWRC |
| 2637 | DKA | Daka | | KZ | AVCODES |
| 2638 | DKA | Daka | | | ICAO1 |
| 2639 | DKA | DAKOTA BUS SERVICE INC | | | SCAC4 |
| 2640 | DKAC | DUKES AUTO TRUCK INC | | | SCAC4 |
| 2641 | DKAD | DAJE TRUCKING INC | | | SCAC4 |
| 2642 | DKAE | DEAN, KAY TRADING | | | SCAC4 |
| 2643 | DKAU | ACIDEKA SA | | | SCAC4 |
| 2644 | DKAY | DOLGY, KATHERINE | | | SCAC4 |
| 2645 | DKB | Dürener Kreisbahn GmbH | Düren | D | privat-bahn.de |
| 2646 | DKB | Dürener Kreisbahn | | D | TRAFFIC |
| 2647 | DKB | Dürener Kreisbahn | | DE | VKM |
| 2648 | DKBE | DKB ENTERPRISES LTD | | | SCAC4 |
| 2649 | DKBF | DKB FARMS AND SERVICES LLC | | | SCAC4 |
| 2650 | DKBM | Dampf-Kleinbahn Mühlenstroth | | D | TRAFFIC |
| 2651 | DKBR | DEKALB RECOVERY INC | | | SCAC4 |
| 2652 | DKBT | DAKOTA BELLE LLC | | | SCAC4 |
| 2653 | DKCG | DOUBLE KC TRUCKING INC | | | SCAC4 |
| 2654 | DKCH | DUKO OIL CO INC | | | SCAC4 |
| 2655 | DKCK | DOLLAR TRUCKING INC | | | SCAC4 |
| 2656 | DKCO | DAIO KAIUN CO LTD | | | SCAC4 |
| 2657 | DKCQ | DOSCH-KING CO INC | | | SCAC4 |
| 2658 | DKCR | DAKOTA CARRIERS INC | | | SCAC4 |
| 2659 | DKCS | DERICK, C TRANSPORT INC | | | SCAC4 |
| 2660 | DKCT | DRAKKAR LOGISTIC | | | SCAC4 |
| 2661 | DKCU | GENERAL CONTAINER SERVICES | | UA | BIC |
| 2662 | DKDB | DOUBLE E TRUCKING LTD | | | SCAC4 |
| 2663 | DKDG | DAKOTA DRAYAGE & CHASSIS INC | | | SCAC4 |
| 2664 | DKDK | DOCK 2 DOCK LLC | | | SCAC4 |
| 2665 | DKDM | DESERT KING DE MEXICO S DE R L DE C | | | SCAC4 |
| 2666 | DKDR | DIRKES, DAVID TRUCKING | | | SCAC4 |
| 2667 | DKDS | DELEK REFINING LTD | | | SCAC4 |
| 2668 | DKDT | DKD TRUCKING INC | | | SCAC4 |
| 2669 | DKE | Jubilee Airways Ltd. | Callsign: Duke, Name changed from Klinge Aviation Limited. | GB | AVCODES |
| 2670 | DKE | Jubilee Airways | | | ICAO1 |
| 2671 | DKEC | D & K EXPRESS INC | | | SCAC4 |
| 2672 | DKEG | DUKE ENERGY CORPORATION | | | SCAC4 |
| 2673 | DKEK | D K EXPRESS | | | SCAC4 |
| 2674 | DKEN | DUKE TRANSPORT INC | | | SCAC4 |
| 2675 | DKEQ | D & K EXCAVATION LLC | | | SCAC4 |
| 2676 | DKER | DIEKER OIL INC | | | SCAC4 |
| 2677 | DKFS | DRAKES FUEL SERVICE INC | | | SCAC4 |
| 2678 | DKGI | DOMEIKIS, GINTARAS | | | SCAC4 |
| 2679 | DKGR | DICKSON GENERAL TRUCKING | | | SCAC4 |
| 2680 | DKGT | DEE KING TRUCKING LP | | | SCAC4 |
| 2681 | DKGV | DELTA TRUCKING SERVICE | | | SCAC4 |
| 2682 | DKH | Juneyao Airlines Co. Ltd. | IATA: HO, Callsign: Air Juneyao, IATA Prefix: 018, | PRC | AVCODES |
| 2683 | DKH | Juneyao Airlines | | | ICAO1 |
| 2684 | DKIC | DUKES, KELLY INC | | | SCAC4 |
| 2685 | DKIL | DANSTOK INT'L | | | SCAC4 |
| 2686 | DKIT | DANMA KITCHEN CABINETS LTD | | | SCAC4 |
| 2687 | DKLA | DAKOTALAND TRUCK BROKERAGE INC | | | SCAC4 |
| 2688 | DKLB | D K LOGISTICS LLC | | | SCAC4 |
| 2689 | DKLE | DURDEN TRUCK LINES INC | | | SCAC4 |
| 2690 | DKLI | DAKOTA LINES INC | | | SCAC4 |
| 2691 | DKLL | D T L | | | SCAC4 |
| 2692 | DKLS | DIRCKS LOGISTICS SOLUTIONS | | | SCAC4 |
| 2693 | DKLU | ROYAL NETHERLANDS AIR FORCE | | NL | BIC |
| 2694 | DKLU | ROYAL NETHERLANDS AIR FORCE DOP/AVV | | | SCAC4 |
| 2695 | DKM | Deutsche Kriegsmarine (1919-1945) | | D | TRAFFIC |
| 2696 | DKMA | DUKE, MARK | | | SCAC4 |
| 2697 | DKME | DECKER, M E TRANSPORT INC | | | SCAC4 |
| 2698 | DKMK | D K M TRANSPORTATION INC | | | SCAC4 |
| 2699 | DKMV | DUECK MARINE DIVISION | | | SCAC4 |
| 2700 | DKMZ | DOTIKI MINE | | | PWRC |
