DDA
DDA is an abbreviation for:
- Umbrella organization of German Avifaunists, non-profit association of all national or regional ornithological organizations in the Federal Republic of Germany
- Department for Disarmament Affairs Department for Disarmament Affairs of the UN Secretariat
- German Dialogue Marketing Akademie GmbH, Haan
- Dichlordiphenylessigsäure
- Digital Differential Analyzer was an electromechanical analog computer
- Doha Development Agenda, English term for the Doha Round
- Dresdner Official Journal, official publication organ of the Saxon capital Dresden
- Disambiguation
- Abbreviation