|File:Zalman Ben Yaakov - Knesset member 1953.jpg|
|Date of birth||1897|
|Place of birth||Sieradz, Russian Empire|
|Year of aliyah||1935|
|Date of death||2 March 1959|
|Faction represented in Knesset|
|1955-1959||Religious Torah Front|
Zalman Ben-Ya'akov (Hebrew: זלמן בן-יעקב, born 1897, died 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 in Sieradz in the Russian Empire (today in Poland), Ben-Ya'akov was educated at a yeshiva. He was amongst the founders of the Polish branch of Agudat Yisrael, and also helped establish Poalei Agudat Yisrael.
In 1935 he made aliyah to Mandatory Palestine, where he headed the Sinai Institution in Tel Aviv and the True Torah organisation in Haifa. One of the heads of Agudat Yisrael's education work, he became a chief inspector of the Ultra-Orthodox education stream.
He was on the Agudat Yisrael list for the 1951 elections, but failed to win a seat. However, he entered the Knesset on 24 June 1953 as a replacement for the deceased Avraham Deutsch. He retained his seat in the 1955 elections, in which Agudat Yisrael ran as part of the Religious Torah Front alliance. He died on 2 March 1959 whilst still a Knesset member. His seat was taken by Shlomo-Ya'akov Gross.
- Zalman Ben-Ya'akov on the Knesset website