Rabbi Dovber of Mezeritch (c. 1772–1827) was a prominent Hasidic leader and the successor of Rabbi Israel Baal Shem Tov, the founder of Hasidism. He played a crucial role in spreading Hasidic teachings and establishing communities throughout Eastern Europe. His leadership emphasized the importance of joy, spirituality, and personal connection to God. Known for his deep wisdom and charismatic personality, Rabbi Dovber attracted many followers, including notable disciples like Rabbi Menachem Mendel of Kotzk and Rabbi Levi Yitzchak of Berdichev. His teachings focused on the inner dimensions of Jewish practice, fostering a sense of unity and devotion among his followers.