Polish rabbi; lived in the first half of the nineteenth century; was first rabbi at Dobria, near Kalisz, then at Plock; later he succeeded his father, Ḥayyim Auerbach, as rabbi of Lencziza, government of Warsaw, Poland. He wrote "Dibre Ḥayyim" (Words of Life), Breslau, 1852, a pilpulistic disquisition on the Shulḥan 'Aruk, and on other rabbinical codes ("posḳim"). His work includes a pilpulistic treatise, "Mayim Ḥayyim" (Living Waters), by his father, Ḥayyim Auerbach, and additions and notes by the author's brother Eliezer.