Aaron Tänzer (born at Pressburg, Hungary, 30 January 1871) was an Austrian rabbi. He studied at the Presburg Rabbinerschule, and Oriental philology and history at the University of Berlin (Ph.D. 1895). In 1896 he was called to Hohenems as chief rabbi of Tyrol and Vorarlberg; and since 1904 he was rabbi of Meran (Tyrol).