Aaron Ben Asher of Karlin (June 6, 1802 – June 23, 1872), known as Rabbi Aaron II of Karlin, was a famous rabbi of the Ḥasidim in northwestern Russia. Thousands of followers used to visit him annually, about the time of the Jewish New Year, as is the custom among that sect, and he was highly esteemed by his adherents. He "reigned" in Karlin, near Pinsk, in the government of Minsk (currently in Belarus), in succession to his father and his grandfather, Aaron ben Jacob. Aaron's daughter, Miriam, married Rabbi Avrohom Yaakov Friedman (1820–1883), the first Rebbe of the Sadigura Hasidic dynasty.