Ya'akov Zerubavel (Hebrew: יעקב זרובבל; January 14, 1886 – June 2, 1967) was a Jewish Zionist activist, writer, publisher, and one of the leaders of the Poale Zion movement.

After helping fellow Zionist Ber Borochov publish an underground newspaper, Zerubavel moved to Vilna.

[3] In 1910 Zerubavel immigrated to Palestine, where he became one of the leaders of the Poale Zion movement along with David Ben-Gurion and Yitzhak Ben-Zvi.

[4] Zerubavel was sentenced to prison by Ottoman authorities during World War I, but he managed to escape and fled to the United States in 1915.

Zerubavel returned to Russia following the October Revolution in 1917, becoming a member of the National Jewish Council of Ukraine.