Isaac Landman

Isaac Landman (October 24, 1880 – September 4, 1946) was an American Reform rabbi, author and anti-Zionist activist. He was editor of the ten-volume The Universal Jewish Encyclopedia.

He was a leader in Jewish–Christian ecumenism.

Landman had also been a prominent opponent of Zionism: when, in 1922, the United States Congress was considering the Lodge–Fish resolution in support of the Balfour Declaration, Landman and Rabbi David Philipson had presented the Reform movement's (then) anti-Zionist position to the House Committee on Foreign Affairs. Landman also printed many opinions against the resolution and Zionism in his American Hebrew Magazine. The bill was eventually unanimously supported by both houses of Congress, and approved by President Harding.

He became rabbi of Brooklyn's Congregation Beth Elohim in 1931. Three years later he began editing the Universal Jewish Encyclopedia, which was published in ten volumes in the 1940s. He died on September 4, 1946.