The Hebrew Institute of Riverdale, commonly called The Bayit, is an Open Orthodox Jewish congregation and synagogue at 3700 Henry Hudson Parkway in the Riverdale neighborhood of the Bronx in New York City, New York, United States.

[1] In 1973, Avi Weiss, who had finished his training at Yeshiva University a few years earlier, became the synagogue's rabbi.

[1] The Hebrew Institute became known for its activism in the campaign to free Soviet Jewry and in defense of Israel.

[citation needed] The congregation has grown to 850 families and served as a platform for Weiss's rabbinical advocacy.

[6] The Jerusalem Post has called the Hebrew Institute "a training ground for young Modern Orthodox rabbis who go on to take over congregations of their own".