Wosner was born in
Vienna,
Austria-Hungary and studied in the
Yeshivas Chachmei Lublin of Poland led by Rabbi
Meir Shapiro. He was also a student of Rabbi Shimon of
Zelicov who was the official supervisor at the Yeshiva. In Vienna, he had known and befriended the Rabbi
Chanoch Dov Padwa of Galicia. He married and immigrated to Israel before the
Holocaust and settled in
Jerusalem, where he studied at the
Dushinsky yeshiva. It was in that time that, in spite of his young age, he became a member of the
Edah HaChareidis. When he relocated to
Bnei Brak, upon the incentive of the
Chazon Ish, Rabbi
Dov Berish Widenfeld of
Tshebin, Rabbi
Isser Zalman Meltzer, and Rabbi
Yitzhak HaLevi Herzog, he established the Zichron Meir neighborhood and Yeshiva Chachmei Lublin, bearing the same name as the one in Lublin where he studied in his youth. Wosner is the author of several works of
Jewish law, including
Shevet HaLevi ("The Tribe of Levi"), a comprehensive series of
halakhic rulings and
responsa on Jewish laws comprising ten volumes, and several other
Torah books all bearing the same name. His halakhic opinions are widely quoted in many works on Jewish law both in Hebrew and English. On May 20, 2012
Ichud HaKehillos LeTohar HaMachane held an
asifa (gathering) at
Citi Field in
Queens to address the dangers of the internet. Wosner spoke via live hookup from Israel to the 60,000 attendees. He banned unfiltered internet use for the Jewish community and allowed filtered internet only for business purposes. He died in
Bnei Brak at 101 years of age. Wosner's sons include Rabbi
Chaim Wosner (1939–2021), formerly dayan of London's Satmar community, who moved to Bnei Brak to assist his father in the management of the Yeshiva. Another son Rabbi
Bentzion Wosner of
Monsey, New York, is the av bet din of the Shevet Halevi
beis din. ==Funeral==