Shraga Feivish Hager

Grand Rabbi Shraga Feivish Hager, also known as the Kosover Rebbe, is the rebbe of the Kosov Hasidic dynasty, a dayan ("rabbinic judge"), and noted orator. He is known as a creative and insightful thinker, whose original teachings are nevertheless rooted in Hasidic mystical tradition. He is also a powerful prayer leader, and has attracted a large following among younger Hasidim.

Hager is the dayan of the Vizhnitz community in Borough Park as well as posek for Chesed shel Emes. Hager is well known for his role regarding contemporary Halacha and is not afraid to be actively involved on taboo issues among Haredim, and more specifically, on controversies where the old traditional Jewish lifestyle clashes with the modern world. He is on the board of the internet filtering service provider J net and has been involved in a controversy concerning Kapparos.

Rabbi Hager is an alumnus of the Chachmei Lublin, Ponevezh, and Lakewood yeshivos. He currently resides in Borough Park, Brooklyn, New York. In January 2023, several orthodox Jewish news outlets reported that Hager was ill and requested prayers for his recovery.

Rabbi Hager is the successor and eldest son of Holocaust survivor Rabbi Avrohom Yehoshua Heshel Hager, Kosover Zalishchiker Rebbe of Borough Park (Died 1999), who was the son of Rabbi Shraga Feivish Hager (1870–1937), Zalishchiker Rebbe; son of Rabbi Boruch Hager (1845–1892) of Vizhnitz. The Zalishchiker Rebbe was a son in law of Rabbi Moshe Hager (1860–1925), Kosover Rebbe and author of Leket Oni. Rabbi Hager is a son in law of Rabbi Chaim Wosner, Rav of Zichron Meir in Bnei Brak (son of Rabbi Shmuel Wosner, preeminent posek). Shabbos Malka Kadisha Volume 1, a book in hebrew on the topic of the jewish sabbath. Shabbos Malka Kadisha Volume 2, a 684 page book in hebrew on the topic of the jewish sabbath, published in 2019.