| 1 | SDO | Aerolineas Santo Domingo, S.A. | IATA: EX, Callsign: Aero Domingo, IATA Prefix: 309, Founded in 1996. Merged with Servicios Aereos Profesionales, Inc. (SAP Air) during 2005. | DOM | AVCODES |
| 2 | SDO | Air Santo Domingo | IATA: EX | | ICAO1 |
| 3 | SDOB | SAN DIEGO COPIERS & OFFICE PRODUCTS | | | SCAC4 |
| 4 | SDOE | SHIELDS RODEO | | | SCAC4 |
| 5 | SDOG | STEINER, DOUG TRUCKING | | | SCAC4 |
| 6 | SDOH | SPECIAL DISPATCH OF HOUSTON INC | | | SCAC4 |
| 7 | SDOL | SNYDER DISCOUNT OIL | | | SCAC4 |
| 8 | SDOMM | Santo Domingo Metro | | DOM | TRAFFIC |
| 9 | SDON | STOCKLEY, DON TRUCKING LLC | | | SCAC4 |
| 10 | SDOP | SOPROMAT LTD | | | SCAC4 |
| 11 | SDOR | SUDDATH RELOCATION SYSTEMS OF ORLAN | | | SCAC4 |
| 12 | SDOS | SDS LOGISTICS INC | | | SCAC4 |
| 13 | SDOT | SHADOW TRUCKING, INC | | | SCAC1 |
| 14 | SDOT | SHADOW TRUCKING INC | | | SCAC4 |
| 15 | SDOU | SPINNAKER EQUIPMENT SERVICES INC. | | USA | BIC |
| 16 | SDOV | SEATRADERS OVERSEAS INC PANAMA | | | SCAC4 |
| 17 | SDOY | SHELDON OIL COMPANY | | | SCAC4 |
