| Detroit City airport | Regional Airport Code | DET |
| Detainee | Military and Defence | DET |
| Department Of Education And Training | Australian | DET |
| Detail | Space Science | DET |
| Dalton Education Trust | Organization | DET |
| Detroit Tigers | Sports | DET |
| Decs Trust | NYSE Symbol | DET |
| Data Entry Terminal | Military | DET |
| DET | Indian Railway Station | DET |
| Determine | Physiology | DET |
| Detroit (mi) | Airport Code | DET |
| detective | Police | DET |
| Detached | Military | DET |
| Directorate Of Employment Training | Business | DET |
| Distributed Explosive Technology System, 4 | Government | DET |
| Detroit City Airport, Detroit, Michigan USA | Regional Airport Code | DET |
| Detroit Lions | NFL Team | DET |
| device execute trigger | Government | DET |
| Distributed Explosive Technology | Military | DET |
| Dull Emitter Transmitting | Electronics | DET |
| Displaced Equipment Training | Military | DET |
| Detent | Space Science | DET |
| Detachment | Military | DET |
