| drill | DROPS Simulator Operation Data |
| drk | Race Studio 2 Downloaded Files |
| drl | Altium Binary Drill File |
| drl | Excellon Drill File |
| drl | PTC Creo Holemaking Parameter Data |
| drmmeta | AMS Additional DRM Data |
| droid | DROID Profile |
| drq | SDLX De-registration Request Data |
| drr | Altium Drill Report File |
| drs | SPSS Raw Response Data |
| drscan | Data Rescue Scans Data |
| drt | PSpice Custom Derating |
| dru | EAGLE Design Rules File |
| drv | AQUA Generic Distance Restraints Violations Data |
| drwprp | SolidWorks Drawing Properties Template |
| drwr | Drop Drawers Data |
| drx | DaVinci Resolve eXchange File |
| dry | XAIRON Organizer Diary Data |
| ds | Pasco DataStudio Data |
| ds | SketchEl XML Datasheet |
| ds0 | DeSmuME Saved State |
| ds1 | DeSmuME Saved State |
| ds10 | WinDS PRO Data |
| ds2 | DeSmuME Saved State |
| ds3 | DeSmuME Saved State |
| ds4 | DeSmuME Saved State |
| ds5 | WinDS PRO Data |
| ds6 | WinDS PRO Data |
| ds7 | WinDS PRO Data |
| ds8 | WinDS PRO Data |
| ds9 | WinDS PRO Data |
| dsb | Barudan Embroidery Data |
| dsc | Bio-Rad DNA Scan Code |
| dsc | Nikon Disk Identification |
| dsc | Softimage 3D Scene |