Abraham Chazan (1849 - 1917) was a rabbi and key figure in the transmission of Breslover Hasidut at the turn of the 20th century. He was born in Tulchin, Ukraine to Nachman Chazan, the closest disciple of Nathan of Breslov ("Reb Noson"), who in turn was the closest disciple of Rebbe Nachman of Breslov. Nachman Chazan assumed the leadership of the Breslover community in Uman, Ukraine after Reb Noson's death.