| 1 | DAN | Maersk Air A/S | IATA: DM, Callsign: Maerskair, IATA Prefix: 349, Merged into Sterling | DK | AVCODES |
| 2 | DAN | Dan-Air Services Ltd. | IATA: DA, Callsign: Danair, Merged into British Airways European Operations Gatwick B.A.E.O.G. | GB | AVCODES |
| 3 | DAN | Air Georgia | IATA: DA, Callsign: Air Georgia, Merged into Aircompany Airzena Georgian Airlines. Designator DA recalled by IATA | GE | AVCODES |
| 4 | DAN | Dana Airlines Ltd. | IATA: 9J, Callsign: Dana Air, ICAO code changedfrom DAV | WAN | AVCODES |
| 5 | DAN | DSB aarhus Nærbane A/S | | DK | VKM |
| 6 | DANA | DANIELS, ANDREW | | | SCAC4 |
| 7 | DANAN | Da-Nan Bus | City: Taipei | RC | TRAFFIC |
| 8 | DANB | DAY AND NIGHT SERVICES INC | | | SCAC4 |
| 9 | DANF | DANISI FUEL CO INC | | | SCAC4 |
| 10 | DANG | DANGO INC | | | SCAC4 |
| 11 | DANI | DANISA TRANSPORT | | | SCAC4 |
| 12 | DANN | DANA TRANSPORT SYSTEMS INC | | | SCAC4 |
| 13 | DANO | DOC AND NORM DIRECT LLC | | | SCAC4 |
| 14 | DANQ | DERINGER, A N INC | | | SCAC4 |
| 15 | DANR | DARVONDA NURSERIES LTD | | | SCAC4 |
| 16 | DANS | DANIEL MOVING SYSTEM INC | | | SCAC4 |
| 17 | DANU | DONATI SPEDITION S.R.L. | | I | BIC |
| 18 | DANUB | Logistic Services Danubius | since 2011 DB Schenker Rail Romania | RO | TRAFFIC |
| 19 | DANV | DERINGER, A N INC | | | SCAC4 |
| 20 | DANX | Danville Industries, Inc. | added 1/1974; 1/1975-1/1980; eliminated 4/1982 | | NAKINA |
| 21 | DANX | Danville Industries, Inc. | added 1/74; 1/75-1/80; eliminated 4/82 | | NRHS |
| 22 | DANX | DANVILLE INDUSTRIES, INC. | | | PWRC |
| 23 | DANY | DANYRO TRANSPORT ENR | | | SCAC4 |
