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.