| Acronym | Meaning |
 | DCIM/DSCIM | Display SYstem Computer Input Multiplexer |
 | DCIU | Digital Control And Interface Unit |
 | DCKNG | Docking |
 | DCL | Document Change List |
 | DCM | DECOM ControlMemory |
 | DCM | Direction Cosine Matrix |
 | DCM | Display And Control Module |
 | DCM | Display And Control Module |
 | DCMB | Development Configuration Management Board |
 | DCN | Design Change Notice |
 | DCN | Document Change Notice |
 | DCN | Drawing Change Notice |
 | DCNP | Document Change Notice Proposal |
 | DCO | Detailed Checkout |
 | DCOP | Displays |
 | DCOP | Detailed Checkout Procedures |
 | DCP | Data Collection Platform |
 | DCP | Depot Condemnation Percent |
 | DCP | DEU Control Program |
 | DCP | Development Cost Plan |
 | DCPEI | DEU Control Program End Item |
 | DCR | Design Certification Review |
 | DCR | Design Change Request |
 | DCR | Design Concern Report |
 | DCR | Document Change Record (or Review) |
 | DCS | Data Communication System |
 | DCS | Data Control System |
 | DCS | Design Communication System |
 | DCS | Design Criteria Specification |
 | DCS | Detail Checkout Specification(s) |
 | DCS | Digital Command System (Subsystem) |
 | DCS | Display And Control System |
 | DCS | Document Control System |
 | DCS | Dual Checkout Station |
 | DCSI | Data And Cqntrol Signal Interface |
 | DCSP | Digital Control Signal Processor |
 | DCSU | Digital Computer Switching Unit |
 | DCU | Digital Computer Unit |
 | DCU | Display And Control Unit |
 | DCV | Direct Current Volts |
 | DD | Data Depository |
 | DD | Data Display |
 | DD | Decoder Driver |
 | DD | Dedicated Displays |
 | DD | Directives Documentation |
 | DD | Mechanical And Facilities Engineering (KSC DE Dir.) |
 | DD&CS | Dedicated Display And Control Subsystem |
 | DD/HH:MM:SS | Day/Hour:Minute:Second |
 | DDA | Digital Differential Analyzer |
 | DDA | ICD Departure Authorization |