| .D00 | FarStone Technology | Fişiere de imagini de disc | VirtualDrive Disc Image Part File | VirtualDrive 16 Pro | FarStone Technology |
| .D01 | Yamaha Corporation | Fişiere de imagini de disc | OPL2 FM Audio File | Winamp with Ganbatte! Plug-in | Unknown Developer |
| .D64 | Commodore International | Fişiere de imagini de disc | Commodore 64 Disk Image | Power64 | MacUpdate |
| .DAA | PowerISO Computing, Inc | Fişiere de imagini de disc | PowerISO Direct-Access-Archive | PowerISO | Power Software Ltd |
| .DAO | Smart Projects | Fişiere de imagini de disc | Disk At Once CD/DVD Image | IsoBuster | Smart Projects |
| .DART | Google | Fişiere de imagini de disc | Dart Source Code File | DART | DARTECH |
| .DAT | Unknown Developer | Fişiere de imagini de disc | Game Data | Dragon UnPACKer | Open Source |
| .DAX | Open Source | Fişiere de imagini de disc | PSP Compressed ISO Disc Image | UMDGen | Open Source |
| .DBR | Astonsoft | Fişiere de imagini de disc | DeepBurner Disc Project | DeepBurner | Astonsoft |
| .DCF | Sony Mobile Communications | Fişiere de imagini de disc | DRM Content Format File | DRM Packager | Sony Mobile Communications |
| .DCM | National Electrical Manufacturers Association (NEMA) | Fişiere de imagini de disc | DICOM Image File Format | Adobe Photoshop | Adobe Systems Incorporated |
| .DDI | Unknown Developer | Fişiere de imagini de disc | DiskDupe Disk Image | Unknown Software | Unknown Developer |
| .DI | Atari Corporation | Fişiere de imagini de disc | Atari Disk Image | PC Xformer Classic | Emulators, Inc |
| .DISK | Open Source | Fişiere de imagini de disc | Linux Virtual Hard Disk | Linux | Open Source |
| .DMG | Apple | Fişiere de imagini de disc | Mac OS X Disk Image File | 7-Zip | Igor Pavlov |
| .DSK | Power Software Ltd | Fişiere de imagini de disc | General Disk Image | PowerISO | Power Software Ltd |
| .DVD | Unknown Developer | Fişiere de imagini de disc | DOS Device Driver | MS-DOS | Microsoft Corporation |
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