| 1 | DOS | Icec Tour Ltd. | | CZ | AVCODES |
| 2 | DOS | U.S. Department of State, International Narcotics and Law Enforcement Affairs (INL Air Wing) | Callsign: Dosair, | USA | AVCODES |
| 3 | DOS | DELAWARE OTSEGO CORP. | | | PWRC |
| 4 | DOS | Delaware Otsego Corp. | | USA | TRAFFIC |
| 5 | DOSAAF | Voluntary Society for the Support of the Army, the Air Force, and the Navy | Добровольное общество содействия армии, авиации и флоту | SU | TRAFFIC |
| 6 | DOSC | DALIAN OCEAN SHIPPING COMPANY | | | SCAC4 |
| 7 | DOSE | DOUBLE 'S' EXPRESS, INC | | | SCAC1 |
| 8 | DOSF | DOSS-FUELCO INC | | | SCAC4 |
| 9 | DOSG | DALE OLD SPECIALIZED HAULING | | | SCAC4 |
| 10 | DOSK | DOSKOVA, TANYA FINE ART | | | SCAC4 |
| 11 | DOSL | DYNAMITE OILFIELD SERVICES | | | SCAC4 |
| 12 | DOSO | Voluntary Defence Assistance Organisatio | Доброволна Организация за Съдействие на Отбраната | BG | TRAFFIC |
| 13 | DOSR | TRANSPORTE DE RIOS | | | SCAC3 |
| 14 | DOSR | DOSS, RICH INC | | | SCAC4 |
| 15 | DOSU | DYNAMIC OCEAN SHIPPING LINE UK LTD | | | SCAC4 |
| 16 | DOSW | DELTA OCEAN SPECIAL MARITIME ENTERP | | | SCAC4 |
