| Abbreviation | Definition |
|---|---|
| DCA | Distance of Closest Approach |
| DCA | Distribution Control Agency |
| DCAR | Design Corrective Action Report |
| DCAS | Data Collection and Analysis System |
| DCAS | Defense Contract Administration Services |
| DCC | Data Computation Complex |
| DCCU | Digital Command and Control Unit |
| DCCU | Digital Communications and Control Unit |
| DCCU | Display Computer Control Unit |
| DCE | Drop Combustion Experiment |
| DCF | Data Capture Facility |
| DCF | Delayed Catastrophic Failure |
| DCIB | Data Communication Input Buffer |
| DCIM | Display Computer Input Multiplexer |
| DCIU | Digital Control and Interface Unit |
| DCKNG | DoCKinG |
| DCL | Document Change List |
| DCM | Decommutator Control Memory |
| DCM | Direction Cosine Matrix |
| DCM | Display and Control Module |