Austrian rabbi; born at Prague about 1756; died at Eisenstadt, Hungary, about 1833; son of the wealthy Talmudic scholar Meïr Fischer, and father of Marcus Fischer. In addition to Talmud, Fischer studied philosophy and mathematics, and was praised for his attainments in logic and Hebrew grammar by Moses Mendelssohn, with whom he corresponded, and to whom he communicated various observations on his Pentateuch commentary. For nearly two decades he officiated as rabbi (but without assuming the title) of the community of Vienna, which at that time was small. In 1827 he retired to Eisenstadt, a neighboring town.
- J. Gastfreund, Die Wiener Rabbinen, p. 111;
- Kayserling, Moses Mendelssohn, Ungedrucktes und Unbekanntes, pp. 53 et seq.;
- M. Kunitz, Ha-Meẓaref, No. 22.