One of the most frequently asked questions we receive is whether Adolf Hitler was Jewish or had ancestors who were. The idea seems to arise from the remote possibility that Hitler's grandfather was Jewish. Hitler's father, Alois, was registered as an illegitimate child with no father. Alois' mother worked in the home of a wealthy Jew and there is some chance a son in that household got the woman (i.e., Hitler's grandmother) pregnant. Adolf Hitler was not Jewish.