Joseph Jonas Fränckel (1773 in Breslau – January 27, 1846 in Breslau) was a German Jewish businessman, banker and philanthropist. He is best known for having willed the funds for the establishment of the "Jewish Theological Seminary Fraenkel'sche Stiftung" of Breslau, the first modern rabbinical seminary in Central Europe, and the model for similar colleges set up in Europe and the United States.