Yaakov Chaim Sofer (1870–1939) (Hebrew: יעקב חיים סופר) was an Orthodox rabbi, Kabbalist, Talmudist and posek (decider of halakha). Sofer is the author of Kaf Hachaim, a work of halakha (Jewish law), by which title he is also known.
Read more about Yaakov Chaim Sofer: Biography, Works