| 1 | DAC | McDonnell Douglas Corp. | Callsign: Daco, Merged into Boeing Aircraft Company. | USA | AVCODES |
| 2 | DAC | Dominion Air Ltd. | Callsign: Dominion Air, | WAN | AVCODES |
| 3 | DAC | McDonnell Douglas | | | ICAO1 |
| 4 | DACA | DACSA TRUCKING LLC | | | SCAC4 |
| 5 | DACB | DOUBLE ACE CARGO INC | | | SCAC4 |
| 6 | DACC | DACCO INCORPORATED | | | SCAC4 |
| 7 | DACD | DAC | | | SCAC4 |
| 8 | DACF | DAYTON CONTAINERIZED FREIGHT INC | | | SCAC4 |
| 9 | DACI | DORMANS AUTO CENTER INC | | | SCAC4 |
| 10 | DACIA | AUTOMOBILE DACIA SA | | RO | VKM |
| 11 | DACK | D & A TRUCKING INC | | | SCAC4 |
| 12 | DACL | DOWNEAST ANTIQUES & COLLECTIBLES IN | | | SCAC4 |
| 13 | DACM | DAVILA GARCIA, DANIEL | | | SCAC4 |
| 14 | DACO | DAV-COR TRANSPORT INC | | | SCAC4 |
| 15 | DACS | DACS INC | | | SCAC4 |
| 16 | DACU | DANCONTAINER A/S | | DK | BIC |
| 17 | DACW | DAC SERVICES | | | SCAC4 |
| 18 | DACX | VIP Tank Car Service | added 1/1998; 7/2000; eliminated 7/2001; 7/2005 (not listed) | | NAKINA |
| 19 | DACX | Darling & Co. | 8/1920-1/1980; eliminated 10/1985 | | NAKINA |
| 20 | DACX | Darling & Co. | 4/38-1/80 | | NRHS |
| 21 | DACX | VIP Tank Car Service | added 1/98; 7/2000; eliminated 7/2001 | | NRHS |
| 22 | DACX | VIP TANK CAR SERVICES [DARLING & COMPANY] | | | PWRC |
| 23 | DACX | Darling and Company (VIP Tank Car Services) | | | RSRV |
| 24 | DACX | VIP TANK CAR | | | SCAC4 |
| 25 | DACY | DACON LOGISTICS LLC | | | SCAC4 |
| 26 | DACZ | DANA CORP. | | | PWRC |
