The term useful Jew was used in various historical contexts, typically describing a Jew useful in implementing an official authority's policy, sometimes by oppressing other Jews.

• In 1744, Frederick II of Prussia introduced the practice of limiting Jewish population to a small number of the most wealthy families, known as "protected Jews" (Schutzjuden).^[1] The first-born son in such families inherited this privilege; other children were considered useless by the authorities and had the choice of either abstaining from marriage or leaving.^[2]
• Following the establishment of the Pale of Settlement by Imperial Russia, only "useful Jews" (Russian: полезные евреи) were allowed to live outside the Pale; these included Jews such as wealthy first-rung merchants (Russian: купцы первой гильдии), persons who had received higher education, cantonists (after serving their full term in the army), and some other categories.^[3][4]
• In the Soviet Union, Jewish members of the Anti-Zionist Committee of the Soviet Public were colloquially known as "useful Jews" or "pocket Jews" (Russian: карманные евреи), implying their corruption by high positions in the state hierarchy.^[5]
• In Israel and among its supporters, along with the term "useful Jews", the term "useful idiots" is often used to describe anti-Zionist/post-Zionist Jews who stand against the Jewish state.^[6][7]