| dom | DIMPLOT Domain Definition |
| don | PLS-CADD Lines and Annotation Data |
| dop | DxO Optics Pro Sidecar File |
| dop | DOpus Toolbar File |
| doq | Digital Orthophoto Quadrangle Data |
| dost | DoStudio Subtitle Format Data |
| dot | Ribbons Dot Definition |
| dov | BiRT Actuate Query Definition File |
| dp1 | DataPower Database |
| dp2 | DatePad 2 Data |
| dp4 | Actuate Analytics Cube Profile |
| dpatch | Dpatch Patch Data |
| dpb | DataPilot Data |
| dpcache | Apple iPhoto Desktop Photos Cache |
| dpe | DPwinEHE Calculation |
| dpf | F-Secure Default Policy File |
| dpf | COMPRESS Drafter Data |
| dph | BAT Detector Plane Histogram Data |
| dpi | Adlib Express Document Processing Information |
| dply | RootCause Deploy Data |
| dpm | ANSYS Fluent DPM Output Data |
| dpr | ASReml Double Precision Binary Data |
| dprec | Drawpile Record Data |
| dprecz | Drawpile Compressed Record Data |
| dprep | Microsoft Azure Dataflow Preparation Data |
| dpsml | PSML Dynamic Page Definition |
| dptxt | Drawpile Text Record Data |
| dpu | Advanced DHTML Popup Package |
| dpv | Siemens NX Drafting Standard |
| dpz | IBM SPSS Deployment Package |
