In Nazi Germany the Volksdeutsche Mittelstelle or VoMi was a Nazi Party agency founded to manage the interests of the Volksdeutsche - the population of ethnic Germans living outside the Third Reich. Ultimately coming under Allgemeine-SS administration, it became responsible for orchestrating the implementation of Nazi Lebensraum policies in Eastern Europe during World War II.

In Nazi German terminology, Volksdeutsche were "people whose language and culture had German origins but who did not hold German citizenship". The term is the nominalised plural of volksdeutsch, with Volksdeutsche denoting a singular female, and Volksdeutscher, a singular male. The words Volk and völkisch conveyed the meanings of "folk".