Words by letter D
- Democracy Forum
- Democracy International
- Democratic deficit
- Democratic legitimacy
- Demography / demographic crisis
- Denmark
- Derogations
- Devaluation
- Development policy
- Diamantopoulou, Anna (1959 - )
- Differentiated integration, see Variable geometry
- Dillon Round
- Dimas, Stavros (1941- )
- Diplomatic and consular protection
- Direct effect