Zalman Ben-Ya'akov (Hebrew: זלמן בן-יעקב, 1897 – 2 March 1959) was an Israeli politician who served as a member of the Knesset for Agudat Yisrael and the Religious Torah Front between 1953 and 1959.

Born Zalman Jankelewicz in Sieradz in the Russian Empire (today in Poland), Ben-Ya'akov was educated at a yeshiva.

In 1935, he made aliyah to Mandatory Palestine, where he headed the Sinai Institution in Tel Aviv and the True Torah organisation in Haifa.

He was on the Agudat Yisrael list for the 1951 elections, but failed to win a seat.

[1] He retained his seat in the 1955 elections, in which Agudat Yisrael ran as part of the Religious Torah Front alliance.