Chaim Kreiswirth

Rabbi Chaim Kreiswirth (1918–2001) was an Orthodox rabbi who served as the longtime Chief Rabbi of Congregation Machzikei Hadass Antwerp, Belgium. He was the founder and rosh yeshiva of the Mercaz HaTorah yeshiva in Jerusalem, and was a highly regarded Torah scholar.

Kreiswirth was born in Wojnicz, Poland in 1918, the son of Rabbi Avrohom Yosef Schermann and Perla Kreiswirth.

Kreiswirth studied for many years in Poland and Lithuania including the Chachmei Lublin Yeshiva. Rabbis Chaim Ozer Grodzinski and Chanoch Henoch Eigis warmly recommended his manuscript on Tractate Zevachim, which was lost during the Holocaust.

Kreiswirth received Semicha from Chanoch Henich Eigess.

With the 1939 German invasion of Poland, Kreiswirth fled to Lithuania.

In Lithuania, he married Sarah, the daughter of the mashgiach of Slabodka, Rabbi Avraham Grodzinski. Sarah was a niece of the venerable Rabbi Yaakov Kamenetsky. The couple then left via Vilna for Palestine, where he met rabbis including the Brisker Rav, the Chazon Ish, the Steipler, Shlomo Zalman Auerbach and Yosef Shalom Elyashiv.^{[citation needed]}

At the end of World War II, Kreiswirth returned to Poland in an attempt to rescue Jewish children who had been sheltered by the Catholic Church for the war's duration.

In 1947, he moved to the United States and from 1947 to 1953 served as Rosh Yeshiva at the Hebrew Theological College in Chicago, Illinois.