Samuel Abraham Poznański or Shemuel Avraham Poznanski was a Polish Reform rabbi and scholar, known for his studies of Karaism and the Hebrew calendar.
Education
He graduated from the gymnasium of Warsaw and studied at Warsaw University and the Hochschule für die Wissenschaft des Judenthums in Berlin. At that time he formed an intimate friendship with his teacher Moritz Steinschneider, for whose eightieth birthday in 1896 he edited the Festschrift.
Career
Orthodox Jews opposed his appointment and even resorted to street demonstrations. He was succeeded at the Great Synagogue by Moses Schorr in 1923. He was an ardent Zionist, and a delegate to the First Zionist Congress.
"The Anti-Karaite of Saadjah Gaon" (London, 1897).
Membership
He was appointed a member of the Warsaw council of rabbis by a committee of the Great Synagogue on Tłomackie Street, Warsaw just before his death where he preached.