Viznitz, also spelled Vizhnitz, Jews are an ethno-religious people founded as a Hasidic dynasty by Rabbi Menachem Mendel Hager. Vizhnitz is the Yiddish name of Vyzhnytsia, a town in present-day Ukraine.

Menachem Mendel Hager (1830 - 1884) was appointed Rebbe at the age of 24, and soon after he moved to Vyzhnytsia. He became known and admired for his charitable acts, sincerity in prayer and love for Israel. His Torah thoughts were published under the title Tzemach Tzaddik. Following their custom, his leadership has been passed down via his family lineage. The depth of affection for their Rabbis is evident when one dies as thousands of followers will surge around the body shrouded in a prayer shawl.

Viznitz Jews are uniquely dressed in that they are one of the the only groups who wear their hat bow on the right side, not left, which makes it seem backwards compared to similar hats.