PRD
- Democratic Reformist Party
- Democratic Renewal Party (Angola)
- Democratic Renewal Party (Benin)
- Democratic Renewal Party (Brazil)
- Democratic Renewal Party (Portugal)
- Democratic Revolutionary Party
- Dominican Revolutionary Party
- Free Democratic Party of Switzerland
- National security directive
- Partial rootzone drying
- Party of the Democratic Revolution
- Pearl River Delta
- People's Democratic Party (Indonesia)
- Product requirements document