Yosef Sprinzak (Hebrew: יוֹסֵף שְׁפְּרִינְצָק; 8 December 1885 – 28 January 1959) was a leading Zionist activist in the first half of the 20th century, an Israeli politician, and the first Speaker of the Knesset, a role he held from 1949 until his death in 1959.

Another son, Aharon David Sprinzak, an Israeli Air Force pilot, was killed in action during the 1948 Arab-Israeli War.

[2] Sprinzak was elected to the position of speaker of the provisional parliament on 15 July 1948,[3] a role in which he helped lay the foundations of Israel's parliamentarism.

As part of his role as speaker, Sprinzak became acting President of Israel when Chaim Weizmann fell ill from 12 December 1951.

After Weizmann's death on 9 November 1952 Sprinzak served as interim President until inauguration of Yitzhak Ben-Zvi on 10 December 1952.