Sir Leon Simon CB (born 1881 in Southampton; died 1965 in London) was a leading British Zionist intellectual and civil servant who took part in the drafting of the Balfour Declaration of 1917 and served on the Zionist Commission with Chaim Weizmann.
An advocate of cultural Zionism and the reviver of Hebrew language, Simon was a scholar and translator of Ahad Ha'am, and produced the first modern Hebrew translations of Plato.
He served as the Chairman of the Hebrew University’s Executive Council