Yitzhak Avigdor Orenstein (Hebrew: יצחק אביגדור אורנשטיין; June 18, 1893 – May 23, 1948) was an Israeli politician, and the first rabbi of the Western Wall.

[4] In 1915, he married to Mushka Liba,[5] daughter of Rabbi Ashker Yitzhak Weidman and Bluma Slonim, a fellow Ottoman Jew.

[6] In 1919, Orenstein began publishing HaDvir [he], a monthly magazine for the subjects of Torah and Eretz Yisroel, discussing literary topics as well as public affairs concerns.

Concurrently, he became a member of Colel Chabad, and helped aid poor Jewish families in Israel, eventually becoming a director of the organization.

[3] When the news of his death was received, Yitzhak Ben-Zvi set a telegram to David Ben-Gurion statying, "A great minister has fallen today in Israel."