Mischling is a term coined during the Third Reich era in Germany to denote persons deemed to have partial Jewish ancestry. The word has essentially the same origin as the Spanish mestizo and the French métis, and literally means "mixed."

As defined by the Nuremberg laws in 1935, a person having either one Jewish parent or two Jewish grandparents was reckoned as a Mischling of the first degree, with those having one Jewish grandparent being labeled Mischlings of the second degree; these designations were irrespective of the person's own self-perceived religious affiliation, although the religious affiliations of the parents or grandparents were used to make the classification. Persons meeting these criteria were often Roman Catholic by religion: In the 19th Century a sizable number of German Jews converted to Christianity, with virtually all of those doing so choosing to become Roman Catholics rather than Protestants; as a result, due to intermarriage, a significant number of Roman Catholics in Germany had some traceable Jewish ancestry by the time the Nazis came to power.

The SS used a more stringent standard: In order to join, a candidate had to prove (presumably, through baptismal records) that all direct ancestors born since 1750 were not Jewish.

See also: List of terms for multiraciality