| DAC | Digital-to-Analog Converter | - | Human Genome |
| DAFS | Direct Access File System | - | Human Genome |
| DAFS | Document Attribute Format Specification | - | Human Genome |
| DAO | Data Access Objects | - | Human Genome |
| DAO | Disk At Once | - | Human Genome |
| DASD | Direct Access Storage Device | - | Human Genome |
| DAT | Digital Audio Tape | - | Human Genome |
| DB | Database | - | Human Genome |
| DB2 | Database 2 | - | Human Genome |
| DBMS | Database Management System | - | Human Genome |
| DCC | Direct Cable Connection | - | Human Genome |
| DCE | Data Communications Equipment | - | Human Genome |
| DCF | Design Rule For Camera File Systems | - | Human Genome |
| DCI | Display Control Interface | - | Human Genome |
| DDE | Dynamic Data Exchange | - | Human Genome |
| DDI | Direct Draw Interface | - | Human Genome |
| DDOS | Distributed Denial-of-Service | - | Human Genome |
| DDR SDRAM | Double Data Rate-Synchronous DRAM | - | Human Genome |
| DDS | Digital Data Storage | - | Human Genome |
| DEBI | DMA Extended Bus Interface | - | Human Genome |
| DEC | Digital Equipment Corporation | - | Human Genome |
| DES | Data Encryption Standard | - | Human Genome |
| DFM | Design For Manufacturing | - | Human Genome |
| DHCP | Dynamic Host Configuration Protocol | - | Human Genome |
| DID | Direct Inward Dialing | - | Human Genome |
| DIF | Data Interchange Format | - | Human Genome |
| DIF | Directory Interchange Format | - | Human Genome |
| DIMM | Dual In-Line Memory Module | - | Human Genome |
| DIN | Deutsches Institut F?r Normung (German Institute For Standardization) | - | Human Genome |
| DINOR | Divided Bit-line NOR | - | Human Genome |
| DIP | Dual In-line Package | - | Human Genome |
| DIVX | Digital Video Express | - | Human Genome |
| DIZ | Description In ZIP | - | Human Genome |
| DLC | Data Link Control | - | Human Genome |
| DLL | Dynamic Link Library | - | Human Genome |
| DLP | Digital Light Processing | - | Human Genome |
| DLT | Digital Linear Tape | - | Human Genome |
| DMA | Direct Memory Access | - | Human Genome |
| DMCA | Digital Millennium Copyright Act | - | Human Genome |
| DMG | Data Mining Group | - | Human Genome |
| DMI | Desktop Management Interface | - | Human Genome |
| DNS | Domain Name Service (System) | - | Human Genome |
| DOCSIS/MCNS | Data Over Cable Services And Interface Specifications For Multimedia Cable Network Systems | - | Human Genome |
| DOM | Document Object Model | - | Human Genome |
| DOS | Denial-of-Service | - | Human Genome |
| DOS | Disk Operating System | - | Human Genome |
| DPI | Dots Per Inch | - | Human Genome |
| DPMI | DOS Protected Mode Interface | - | Human Genome |
| DRAM | Dynamic Random Access Memory | - | Human Genome |
| DSL | Digital Subscriber Line | - | Human Genome |
| DSLAM | Digital Subscriber Line Access Multiplexer (Module) | - | Human Genome |
| DSOM | Distributed System Object Model | - | Human Genome |
| DSP | Digital Signal Processor | - | Human Genome |
| DSR | Data Set Ready | - | Human Genome |
| DSTN | Double-layer Supertwist Nematic. (in Passive-matrix LCD Technology) | - | Human Genome |
| DSU | Data Service Unit | - | Human Genome |
| DSVD | Digital Simultaneous Voice And Data | - | Human Genome |
| DTD | Document Type Definition | - | Human Genome |
| DTE | Data Termination (Terminal) Equipment | - | Human Genome |
| DUN | Dial-Up Networking | - | Human Genome |
| DVD | Digital Versatile (Video) Disc | - | Human Genome |
| DVD+RW | Digital Versatile (Video) Disc + Read/Write | - | Human Genome |
| DVD-RAM | Digital Versatile (Video) Disc - Random Access Memory | - | Human Genome |
| DVD-ROM | Digital Versatile (Video) Disc - Read Only Memory | - | Human Genome |
| DVI | Digital Video Interactive | - | Human Genome |
| DWDM | Dense Wave Division Multiplexing | - | Human Genome |
| DXF | Data Exchange File (Format) | - | Human Genome |
| DA | Domain Analysis
| - | Human Genome |
| DAA | designated approving authority
| - | Human Genome |
| DACS | digital access cross-connect systems
| - | Human Genome |
| DAR | Designated Agency Representative
| - | Human Genome |
| DARPA | Defense Advanced Research Agency
| - | Human Genome |
| DBCES | dynamic bandwidth circuit emulation
| - | Human Genome |
| DBoR | database of record
| - | Human Genome |
| DC | direct current
| - | Human Genome |
| DCA | distributed component architecture
| - | Human Genome |
| DCCS | digital cross connects systems
| - | Human Genome |
| DCE-RPC | distributed computing environment-remote procedure calls
| - | Human Genome |
| DCID | Director of Central Intelligence Directive
| - | Human Genome |
| DCS | digital cross-connect switch
| - | Human Genome |
| DCSS | digital conferencing switching system
| - | Human Genome |
| DCTN | Defense Commercial Telecommunications Network
| - | Human Genome |
| DDA | domain-defined attribute
| - | Human Genome |
| DEA | Drug Enforcement Administrator
| - | Human Genome |
| DECNet | Digital Equipment Corporation Protocol
| - | Human Genome |
| DECT | disaster engineering connection technology
| - | Human Genome |
| DFS | Dark Fiber Services
| - | Human Genome |
| DHS | Dedicated Hosting Services
| - | Human Genome |
| DiffServe-TE-MAR | differentiated service traffic engineering-maximum allocated resource
| - | Human Genome |
| DIRECT | disaster intelligent recovery engineering connection technology
| - | Human Genome |
| DIS | draft international standard
| - | Human Genome |
| DISA | Defense Information System Agency
| - | Human Genome |
| DISCO | Defense Industrial Service Clearance Office
| - | Human Genome |
| DISN | Defense Information Services Network
| - | Human Genome |
| DITCO | Defense Information Technology Contracting Office
| - | Human Genome |
| DITSCAP | DoD Information Technology Security Certification and
| - | Human Genome |
| DLCI | data link connection identifier
| - | Human Genome |
| DLS | data link switching
| - | Human Genome |
| DMRC | device monthly recurring charge
| - | Human Genome |
| DMS | Defense Message System
| - | Human Genome |
