אשר צבי מאוסטראה

Asher Zebi ben David of Ostrowo was a 19th-century hasidic rabbi who served as Av Beit Din of Korets, Volhynia, and later as "maggid" (preacher) of Ostrowo, in the government of Lomza in Russian Poland. He was a pupil of Rabbi Dov Ber of Mezeritch.