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