Years: 1915–2006
Primary city: Jerusalem
Rabbi Eliezer Yehuda Waldenberg, known for his multi-volume halachic treatise Tzitz Eliezer, served as a posek and dayan in Jerusalem. He authored the encyclopedic Tzitz Eliezer, which addresses a wide range of halachic topics with particular emphasis on medical ethics, including fertility, organ transplantation, and end-of-life issues. His rulings on contemporary medical dilemmas established him as a primary authority in applying Jewish law to modern medicine.