| 1 | DN | Piper Aztec Inc, d/b/a Aztec Airways | Name changed to Aztec Worldwide Airlines, Inc. Prefix Code 179 recalled by IATA | USA | AVCODES |
| 2 | DN | Metropolis Noord I.B.V. | ICAO: MPS, Callsign: Metro Regional, | NL | AVCODES |
| 3 | DN | Voronezh Aircraft Manufacture Society | ICAO: VSO, Callsign: Vaso, Designator DN recalled by IATA | RUS | AVCODES |
| 4 | DN | Trans Pacific Airlines | Designator DN* recalled by IATA | AUS | AVCODES |
| 5 | DN | Alinord S.p.A. | ICAO: DNO, Callsign: Alinord, | I | AVCODES |
| 6 | DN | Aerodespachos de El Salvador | ICAO: DNA, Callsign: Aerodespachos, Designator DN recalled by IATA | ES | AVCODES |
| 7 | DN | Air Deccan | ICAO: DKN, Callsign: Deccan, Now Kingfisher Red, known formerly as Simplifly Deccan and prior to that as Air Deccan, is a low-cost airline run by Kingfisher Airlines. Designator DN* reinstated by IATA | IND | AVCODES |
| 8 | DN | Groupe Air Senegal (Senegal Airlines) | ICAO: SGG, Callsign: Senegal Air, | SN | AVCODES |
| 9 | DN | Norwegian Air Argentina S.A.U. | ICAO: NAA, Callsign: Noruega, Commenced operations on 16 October 2018. | RA | AVCODES |
| 10 | DN | Dan Air (AOC) S.r.l. | ICAO: JOC, Callsign: Just Us, Name changed from Just-Us Air S.r.l. | RO | AVCODES |
| 11 | DN | *DELAWARE & NORTHERN RR | | | PWRC |
| 12 | DN | +DAKOTA NORTHERN RAILROAD INC. | | | PWRC |
| 13 | DN | DAKOTA NORTHERN RAILROAD INC | | | SCAC4 |
| 14 | DNA | Aerodespachos de El Salvador | IATA: DN, Callsign: Aerodespachos, Designator DN recalled by IATA | ES | AVCODES |
| 15 | DNA | Aerodespachos De El Salvador | | | ICAO1 |
| 16 | DNAA | DANBRED NORTH AMERICA | | | SCAC4 |
| 17 | DNAD | DANA TRUCKING INC | | | SCAC4 |
| 18 | DNAF | D & A TRANSFER INC | | | SCAC4 |
| 19 | DNAI | DON MAR GROUP INC | | | SCAC4 |
| 20 | DNAK | D & A TRUCK LINES | | | SCAC4 |
| 21 | DNAL | DENALI TRANSPORTATION CORPORATION | | | SCAC1 |
| 22 | DNAL | DREAMS N ASPIRATIONS HEAVY HAUL INC | | | SCAC4 |
| 23 | DNAM | DIMPLEX NORTH AMERICA LIMITED | | | SCAC4 |
| 24 | DNAQ | DOCKSIDE SERVICES INC | | | SCAC4 |
| 25 | DNAR | DANA TRANSPORTATION INC | | | SCAC4 |
| 26 | DNAS | DANIS, LUC | | | SCAC4 |
| 27 | DNAT | DNA TRANSCOMP | | | SCAC4 |
| 28 | DNAU | SEACO SRL | | BDS | BIC |
| 29 | DNAV | DANBRED NORTH AMERICA | | | SCAC4 |
| 30 | DNAX | Dana Railcare | added 1/1996; 7/2000-7/2005 | | NAKINA |
| 31 | DNAX | Dana Railcare | added 1/96; 7/2000 | | NRHS |
| 32 | DNAX | DANA RAILCARE | | | PWRC |
| 33 | DNAX | Dana Railcare | | | RSRV |
| 34 | DNBA | DANIELS TRUCKING | | | SCAC4 |
| 35 | DNBC | DNB TRANSPORTATION INC | | | SCAC4 |
| 36 | DNBD | DPS TRANSPORTA | | | SCAC4 |
| 37 | DNBF | DON-BAR FREIGHT INC | | | SCAC4 |
| 38 | DNBN | D & N BENDING | | | SCAC4 |
| 39 | DNBP | D & B TRANSPORT INC | | | SCAC4 |
| 40 | DNBT | DNB TRANSPORT ENR | | | SCAC4 |
| 41 | DNC | Aerodynamics Malaga, S.L. | Callsign: Flyingolive, | E | AVCODES |
| 42 | DNC | Aeroynamics Malaga | | | ICAO1 |
| 43 | DNCA | DANCER LOGISTICS INC | | | SCAC4 |
| 44 | DNCC | DANCO LTD | | | SCAC4 |
| 45 | DNCD | D & S TRUCK LINES INC | | | SCAC4 |
| 46 | DNCG | DENVER CARTAGE COMPANY | | | SCAC4 |
| 47 | DNCI | DELSMAN, C & SONS INC | | | SCAC4 |
| 48 | DNCK | DONATELLI TRUCKING INC | | | SCAC4 |
| 49 | DNCL | DAY & NIGHT CARRIERS LTD | | | SCAC4 |
| 50 | DNCO | DAY & NIGHT CARGO INC | | | SCAC4 |
| 51 | DNCP | DANCEPROS | | | SCAC4 |
| 52 | DNCS | Daher Projects GmbH | Real: NCS | D | TRAFFIC |
| 53 | DNCU | DANCONTAINER A/S | | DK | BIC |
| 54 | DNCU | DANCONTAINER | | | SCAC4 |
| 55 | DNCV | D N C TRANSPORT | | | SCAC4 |
| 56 | DNCX | Denco Petroleum, Inc. | added 10/1991; eliminated 1/1993; 1/1994 (not listed) | | NAKINA |
| 57 | DNCX | Denco Petroleum, Inc. | added 10/91; eliminated 1/93; 1/94 | | NRHS |
| 58 | DNCX | DENCO PETROLEUM, INC. | | | PWRC |
| 59 | DNCY | DYNAMIC NETWORK CONTAINER LINE LTD | | | SCAC4 |
| 60 | DND | Eldinder Aviation | Callsign: Dinder, Name changed to Eldinder Airlines. | SUD | AVCODES |
| 61 | DND | Douglas Airways Pty., Ltd. | IATA: DZ, Callsign: Delta Zulu, | PNG | AVCODES |
| 62 | DND | Eldinder Airlines | Callsign: Dinder, Name changed from Eldinder Aviation. | SUD | AVCODES |
| 63 | DND | Eldinder Aviation | | | ICAO1 |
| 64 | DNDA | D N D EXPRESS INC | | | SCAC4 |
| 65 | DNDC | D AND D TRUCK SERVICES | | | SCAC4 |
| 66 | DNDD | DONALDS TRANSPORT EXPRESS | | | SCAC4 |
| 67 | DNDF | D N D | | | SCAC4 |
| 68 | DNDG | D & D TRUCKING INC | | | SCAC4 |
| 69 | DNDH | D & D HOT SHOT | | | SCAC4 |
| 70 | DNDI | D N D INTERNATIONAL INC | | | SCAC4 |
| 71 | DNDJ | D & D TRUCKING | | | SCAC4 |
| 72 | DNDK | DND TRUCKING | | | SCAC4 |
| 73 | DNDL | DUNDALK OIL COMPANY | | | SCAC4 |
| 74 | DNDM | DANNEHL, DARREN TRUCKING | | | SCAC4 |
| 75 | DNDO | DIAMOND DOORS INC | | | SCAC4 |
| 76 | DNDP | DND TRANSPORTATION | | | SCAC4 |
| 77 | DNDR | DURANGO DOORS LLC | | | SCAC4 |
| 78 | DNDS | DANDY SERVICE CORPORATION | | | SCAC4 |
| 79 | DNE | Venid Air | Callsign: Venid, Ceased Operations. | BG | AVCODES |
| 80 | DNE | Duluth & Northeastern R.R. Co. | 1/1975-1/1980; eliminated 1/1985; eliminated 1/1994; 1/1994-7/2005 (not listed) | | NAKINA |
| 81 | DNE | Duluth & Northeastern R.R. Co. | 1/75-1/80; eliminated 1/85; eliminated 1/94; 7/2000 | | NRHS |
| 82 | DNE | DULUTH & NORTHEASTERN RAILROAD COMPANY | | | PWRC |
| 83 | DNE | Duluth and Northeastern Railroad | | | RSRV |
| 84 | DNED | DOWN TO EARTH DIST INC | | | SCAC4 |
| 85 | DNEE | DIANE ENTERPRISES LLC | | | SCAC4 |
| 86 | DNEF | DUNSMORE, E F | | | SCAC4 |
| 87 | DNEI | DUNNMOR TRUCKING LLC | | | SCAC4 |
| 88 | DNEL | DEPOT ENERGY LLC | | | SCAC4 |
| 89 | DNEM | DUTSON, ERNEST | | | SCAC4 |
| 90 | DNEQ | DAN EXPRESS INC | | | SCAC4 |
| 91 | DNES | DNESTR LLC | | | SCAC4 |
| 92 | DNET | D & E TRANSPORT | | | SCAC4 |
| 93 | DNEU | DOERSAM + NICKEL TRANSPORT GMBH | | D | BIC |
| 94 | DNFA | DUNSTER, FREDERICK A | | | SCAC4 |
| 95 | DNFC | DEAN FREIGHT CARRIERS INC | | | SCAC4 |
| 96 | DNFI | DINOLA, T FUELS INC | | | SCAC4 |
| 97 | DNFL | DEGOEYS NURSERY AND FLOWERS | | | SCAC4 |
| 98 | DNFQ | D&F TRUCKING CO | | | SCAC1 |
| 99 | DNFQ | D & F TRUCKING CO | | | SCAC4 |
| 100 | DNFW | DENVER FREIGHTWAYS INC | | | SCAC4 |
