Rabbi Nachum Sauer is the Rosh Kollel of the Yeshiva of Los Angeles. He received Semicha from Harav Yosef Dov Soloveichik, Zt"l, under whom he studied for seven years. He is also an alumnus of the Mirrer Yeshiva in Jerusalem.

He is a member of the Choshen Mishpat Bei Din of the Rabbinical Council of California. Rabbi Sauer has lectured widely on many contemporary Halachic issues. He is well known for his ability to present complex Halachic issues in a clear and lucid style.