Zvi Yehuda Kook (Hebrew: ??? ????? ???, 23 April 1891 – 9 March 1982) was an Orthodox rabbi, a prominent leader of Religious Zionism, and Rosh Yeshiva of the Mercaz HaRav yeshiva.
He was the son of Rabbi Abraham Isaac Kook,
the first Ashkenazi chief rabbi of British Mandatory Palestine.His teachings are partially responsible for the modern religious settlement movement in Judea and Samaria.
Many of his ideological followers in the Religious Zionist movement settled there.
Under the leadership of Kook, with its center in the yeshiva founded by his father, Jerusalem's Mercaz HaRav, thousands of Orthodox Jews campaigned actively against territorial compromise, and established numerous settlements throughout the West Bank and Gaza Strip.
Many of these settlements were subsequently granted official recognition by Israeli governments, both right and left.