DDR is a three-letter abbreviation with multiple meanings, including:
  1. Deutsche Demokratische Republik (German Democratic Republic)
  2. Double data rate; see DDR SDRAM
  3. Dance Dance Revolution
  4. Disarmament, Demobilization and Reintegration - activities designed to facilitate disbanding military fighters and easing their transition back into society.

This is a disambiguation page; that is, one that just points to other pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the appropriate specific page.