Chayey Moharan Hebrew: חיי מוהר"ן‎‎) is the biography of Rabbi Nachman of Breslov, written by his disciple and scribe Rabbi Nathan of Breslov. As the tzaddik is of central importance in Judaism and especially Breslov, and as the book is about Rabbi Nachman's life and Rabbi Nachman held himself to be the tzaddik hador (tzaddik of the era), Chayey Moharan is an extremely important Jewish book. It became more widely known to Anglophones with the publication of its translation, titled Tzaddik, by Breslov Research Institute, in 1987.