| 1 | DEP | Dardan Air | Callsign: Air Dardan, Founded in 2000. Ceased operations in 2001. | BIH | AVCODES |
| 2 | DEPA | DE PAZ TRANSPORT | | | SCAC4 |
| 3 | DEPC | DARLAMIN ENTERPRISES LLC | | | SCAC4 |
| 4 | DEPD | DOUBLE EAGLE PRODUCE AND TRANSPORTA | | | SCAC4 |
| 5 | DEPE | DE PAOLI EQUIPMENT INC | | | SCAC4 |
| 6 | DEPN | DEPENDABLE EXPRESS INC | | | SCAC4 |
| 7 | DEPO | DEPENDON, INC | | | SCAC1 |
| 8 | DEPOL | Przedsiębiorstwo Obrotu Surowcami Wtórnymi DEPOL Sp. z o.o. | | PL | VKM |
| 9 | DEPP | DEPPE LUMBER CO INC | | | SCAC4 |
| 10 | DEPQ | DANNER ENTERPRISES INC | | | SCAC4 |
| 11 | DEPS | DHESI ENTERPRISES LTD | | | SCAC4 |
| 12 | DEPT | DEPENDABLE TRUCK LINES, INC | | | SCAC1 |
| 13 | DEPU | DEPOT 2000 ZIERA & CO GMBH | | | SCAC4 |
| 14 | DEPX | Dependable Properties, Inc. | added 10/1974; 1/1975-1/1980; eliminated 10/1985 | | NAKINA |
| 15 | DEPX | Dave Ellis Produce | 7/1930 | | NAKINA |
| 16 | DEPX | Dependable Properties, Inc. | added 10/74; 1/75-1/80 | | NRHS |
| 17 | DEPX | *DAVE ELLIS PRODUCE | | | PWRC |
| 18 | DEPX | *DEPENDIBLE PROPERTIES, INC. | | | PWRC |
| 19 | DEPX | Dependable Properties | | | RSRV |
