| Abbreviation | Definition |
|---|---|
| DOC | Word DOCument |
| DOCX | Microsoft Word 2007/2010/2013 document |
| DOG | Laughing Dog Screen Maker Screen file |
| DOH | Dependency information for .poh (Geoworks) |
| DOS | 1st Reader External command file |
| DOS | DOS related file (Win95) |
| DOS | External command file (1st Reader) |
| DOS | Windows DOS-related file |
| DOT | CorelDraw Line-type definition file |
| DOT | Document template (MS Word) |
| DOT | Line-type definition file (CorelDraw) |
| DOT | Word Document Template |
| DOX | MultiMate 4.0 Text document |
| DOZ | Description Out of Zip (VENDINFO) |
| DP | Daily Planner Calendar file |
| DP | DataPhile Data file |
| DP | THOR database Primary Data file |
| DPD | Dyadic predicates (ABC programming language) |
| DPJ | Project (Borland Delphi) |
| DPR | Default project- and state-related information (Borland C++ - Delphi) |