Kadish Luz (Hebrew: קדיש לוז; 10 January 1895 – 4 December 1972) was an Israeli politician who served as Minister of Agriculture between 1955 and 1959 and as Speaker of the Knesset from 1959 and 1969.

He served in the Russian Army during World War I and was a founder of the Hebrew Soldier Association and the HeHalutz movement.

He made aliyah to Palestine in 1920 and initially worked as an agricultural labourer in Kiryat Anavim and Be'er Tuvia.

After leaving the cabinet in 1959, he became Speaker of the Knesset, serving for 10 years, the second longest term after Yosef Sprinzak.

Following the sudden death of Yitzhak Ben-Zvi on 23 April 1963, he served as acting President of the state, until the election of Zalman Shazar on 21 May 1963.