| 1 | DM | Maersk Air A/S | ICAO: DAN, Callsign: Maerskair, IATA Prefix: 349, Merged into Sterling | DK | AVCODES |
| 2 | DM | Maersk Air A/S | ICAO: DMA, Callsign: Maerskair, IATA Prefix: 349, ICAO designator changed to DAN | DK | AVCODES |
| 3 | DM | Asian Air Company Limited | | T | AVCODES |
| 4 | DM | Anda Air LLC | ICAO: SSV, Commenced operations on 22 October 2016. | UA | AVCODES |
| 5 | DM | DW Dominican Wings. S.A. d/b/a Arajet | ICAO: DWI, | DOM | AVCODES |
| 6 | DM | Lake State Ry. Co. | added 4/1992; 1/1994-7/2005 | | NAKINA |
| 7 | DM | Detroit & Mackinac Ry. | 1/1975-1/1980; eliminated 4/1992 | | NAKINA |
| 8 | DM | (D&M) Detroit & Mackinac Ry. | 7/1965-10/1966 | | NAKINA |
| 9 | DM | (D&M) Detroit & Mackinac Ry. | 7/65-10/66 | | NRHS |
| 10 | DM | Detroit & Mackinac Ry. | 1/75-1/80; eliminated 4/92 | | NRHS |
| 11 | DM | Lake State Ry. Co. | added 4/92; 1/94-7/2000 | | NRHS |
| 12 | DM | LAKE STATE RAILWAY CO. [DETROIT & MACKINAC RY] | | | PWRC |
| 13 | DM | Lake State Railway | | | RSRV |
| 14 | DM | DETROIT AND MACKINAC RAILWAY COMPAN | | | SCAC4 |
| 15 | DM | Detroit & Mackinak Railroad | | USA | TRAFFIC |
| 16 | DM&IR | DULUTH, MISSABE & IRON RANGE RWY | | | PWRC |
| 17 | DM&N | Duluth, Missabe & Northern Ry. (Co.) | 7/1932-7/1954 | | NAKINA |
| 18 | DM&N | Duluth, Missabe & Northern Ry. | 4/38-1/52 | | NRHS |
| 19 | DM&N | DULUTH, MISSABE & NORTHERN RWY. CO. | | | PWRC |
| 20 | DMA | Maersk Air A/S | IATA: DM, Callsign: Maerskair, IATA Prefix: 349, ICAO designator changed to DAN | DK | AVCODES |
| 21 | DMAA | D & M TRUCKING | | | SCAC4 |
| 22 | DMAB | DIAZ MARTINEZ, ABEL | | | SCAC4 |
| 23 | DMAD | D & M TRANSPORT BROKERS INC | | | SCAC4 |
| 24 | DMAE | DOMA EXPORT COMPANY INC | | | SCAC4 |
| 25 | DMAF | D M LOGISTICS INC | | | SCAC4 |
| 26 | DMAG | DENOMME, A L TRUCKING | | | SCAC4 |
| 27 | DMAH | DMA TRANSPORT INC | | | SCAC4 |
| 28 | DMAI | DUTCH MAID LOGISTICS INC | | | SCAC4 |
| 29 | DMAJ | DMT | | | SCAC4 |
| 30 | DMAK | DONS MAKIKI INC | | | SCAC4 |
| 31 | DMAL | DANMAR LINES LTD | | | SCAC4 |
| 32 | DMAP | DMM EXPRESS COMPANY | | | SCAC4 |
| 33 | DMAT | D & M TRANSPORT INC | | | SCAC4 |
| 34 | DMAU | D-MARE LTD | | GB | BIC |
| 35 | DMAU | DMA-TRANS B V | | | SCAC4 |
| 36 | DMAY | DECISION MAKER TRANSPORT LLC | | | SCAC4 |
| 37 | DMB | Aerorental | Callsign: Aerorental, | PA | AVCODES |
| 38 | DMBA | DON MIGUEL TRANSPORTES S DE RL DE | | | SCAC4 |
| 39 | DMBB | DE MASTER TRUCKING INC | | | SCAC4 |
| 40 | DMBE | DIMOK TIMBER LTD | | | SCAC4 |
| 41 | DMBF | DEANGELIS, MAX | | | SCAC4 |
| 42 | DMBO | D M B LOGISTICS | | | SCAC4 |
| 43 | DMBP | DMB TRANSPORTATION SERVICE | | | SCAC4 |
| 44 | DMBR | DMB | | | SCAC4 |
| 45 | DMBU | DAMEN CIVIL & MODULAR CONSTRUCTIONS B.V. | | NL | BIC |
| 46 | DMBU | DAMEN SHIPYARDS GORINCHEM | | | SCAC4 |
| 47 | DMC | Aerodinamica de Monterrey, S.A. de C.V. | Callsign: Dinamicamont, | MEX | AVCODES |
| 48 | DMC | Aerodinamica de Monterrey | | | ICAO1 |
| 49 | DMCA | DIAMOND C TRANSPORT INC | | | SCAC4 |
| 50 | DMCB | DEMCO TRANSPORTATION INC | | | SCAC4 |
| 51 | DMCC | D & M CARRIERS INC | | | SCAC4 |
| 52 | DMCE | DMC TRANSPORT | | | SCAC4 |
| 53 | DMCG | D & M CARTAGE INC | | | SCAC4 |
| 54 | DMCJ | DIVERSIFIED MANUFACTURING CORP | | | SCAC4 |
| 55 | DMCM | D & M TRUCKING SERVICES CORP | | | SCAC4 |
| 56 | DMCO | D & M BROTHERS ENTERPRISE CO | | | SCAC4 |
| 57 | DMCP | DMC TRANSPORTE FRONTERIZO | | | SCAC4 |
| 58 | DMCQ | DAMCO A/S | | | SCAC4 |
| 59 | DMCT | DOMESTIC CONTAINER TRANSPORTATION | | | SCAC4 |
| 60 | DMCU | UAB DM CONTAINERS | | LT | BIC |
| 61 | DMCU | Sea-Can Containers | | | RSRV |
| 62 | DMCU | DEL MONTE TROPICAL FRUIT COMPANY NA | | | SCAC4 |
| 63 | DMCW | DANIEL MARINE CORP | | | SCAC4 |
| 64 | DMCX | Des Moines Ice Co. | added 7/1963; eliminated 1/1964 | | NAKINA |
| 65 | DMCX | Damascus Manufacturing Co. | 7/1937-4/1938 (not listed) | | NAKINA |
| 66 | DMCX | The Damascus Refining Co. | 7/1923 | | NAKINA |
| 67 | DMCX | Des Moines Ice Co. | added 7/63 | | NRHS |
| 68 | DMCX | *DAMASCUS MFG. CO. [DAMASCUS REFINING CO.] | | | PWRC |
| 69 | DMCX | *DES MOINES ICE CO. | | | PWRC |
| 70 | DMD | R S T Aviation N.V. | Callsign: Sky Diamond, | B | AVCODES |
| 71 | DMD | Diamond Airways | Callsign: Diamond, | GB | AVCODES |
| 72 | DMD | Namdeb Diamond Corporation Namibia | Callsign: Diamondjet, | NAM | AVCODES |
| 73 | DMDA | DMD TRANSPORT LLC | | | SCAC4 |
| 74 | DMDB | D & M DISTRIBUTION SERVICES INC | | | SCAC4 |
| 75 | DMDD | DMD BROKERAGE LLC | | | SCAC4 |
| 76 | DMDE | DIAMOND E TRANSPORT LLC | | | SCAC4 |
| 77 | DMDH | DIAMOND TRUCKING INC | | | SCAC4 |
| 78 | DMDM | DELGADO MARCHENA, DANIEL AND MANUEL | | | SCAC4 |
| 79 | DMDN | DISTRIBUTION MARCEL DION INC | | | SCAC4 |
| 80 | DMDO | DIAMOND TRANSPORT | | | SCAC4 |
| 81 | DMDP | DIAMOND P TRUCKING INCORPORATED | | | SCAC4 |
| 82 | DMDQ | DIAMOND TRANSPORTATION LOGISTIC INC | | | SCAC4 |
| 83 | DMDU | DANNEBROG MARINE SERVICES AS | | | SCAC4 |
| 84 | DMDY | DAIRY MAID DAIRY CO INC | | | SCAC4 |
| 85 | DME | Dakota, Minnesota & Eastern R.R. Corp. | added 1/1987; 1/1994-7/2005 | | NAKINA |
| 86 | DME | Dakota, Minnesota & Eastern R.R. Corp. | added 1/87; 1/94-7/2000 | | NRHS |
| 87 | DME | Dortmund Märkische Eisenbahn GmbH | Dortmund | D | privat-bahn.de |
| 88 | DME | Deutsche Museums Eisenbahn GmbH | Darmstadt | D | privat-bahn.de |
| 89 | DME | DAKOTA MINNESOTA & EASTERN RR | | | PWRC |
| 90 | DME | Dakota, Minnesota and Eastern Railroad | | | RSRV |
| 91 | DME | DAKOTA MINNESOTA & EASTERN RAILROAD | | | SCAC4 |
| 92 | DME | Dortmund-Märkische Eisenbahn | | D | TRAFFIC |
| 93 | DME | Deutsche -Museums-Eisenbahn GmbH | | DE | VKM |
| 94 | DMEH | DHAMI MOTOR EXPRESS INC | | | SCAC4 |
| 95 | DMEP | D & M ENTERPRISES III | | | SCAC4 |
| 96 | DMEQ | DEMENAGE | | | SCAC4 |
| 97 | DMER | DIMERCO EXPRESS (USA) CORP | | | SCAC4 |
| 98 | DMER | Dakota, Minnesota & Eastern R.R. Corp. | Real: DME | USA | TRAFFIC |
| 99 | DMEU | DME AEROSOL LLC | | RUS | BIC |
| 100 | DMEW | D & M EXPRESS OF WISCONSIN INC | | | SCAC4 |
