ר׳ חיים עוזר גרודזינסקי
ר׳ חיים עוזר גרודזינסקי (24 August 1863–9 August 1940) was a Lithuanian posek, av beit din and communal leader whose Vilna office became a clearing-house for halakhic questions, institutional policy and relief across Eastern European Orthodox Jewry. Born in Iwye to ר׳ דוד שלמה גרודזינסקי, the town’s rabbi, he studied among the perushim of Eishyshok and at Volozhin, where ר׳ חיים הלוי סולובייצ׳יק influenced his analytical learning. After marrying Leah, daughter of Vilna dayan ר׳ אליהו אליעזר גרודזינסקי, he joined the Vilna beit din in 1887. He never held an uncontested title of ‘chief rabbi of Vilna’; rather, his authority grew through the rabbinical court, scholarship and communal trust. He supported the Ramailes yeshiva, taught an elite scholars’ group and answered correspondents internationally. At Agudath Israel’s 1912 founding conference he entered its leading rabbinic council, while retaining an independent Lithuanian leadership role. After the First World War he and ר׳ ישראל מאיר הכהן organized support for devastated yeshivot; the Vaad Hayeshivot, founded in 1924, coordinated fundraising and material aid for a large regional network. His three-volume שו״ת אחיעזר, published in Vilna between 1922 and 1939, addresses all sections of the Shulchan Aruch and modern communal problems with conceptual precision and practical responsibility. He also advocated for persecuted German Jews after 1933. When war divided Poland in 1939, he urged displaced yeshivot toward temporarily Lithuanian Vilna and organized assistance for thousands of refugees. He died before Soviet repression and Nazi mass murder destroyed the institutional world he had laboured to sustain.